问题如下图：
选项：
A. 
B. 
C. 
解释：
老师你好，这里我能否这么理解stop sell 对于价格被高估的股票有利，stop buy 对于价格被低估的股票有利，可以吗？谢谢
NO.PZ2018062002000029 问题如下 Tim owns 200 shares PZ company's stock. The current priof the stois $20 per share. When use technicanalysis, Tim fin ththe stopriha support level of $15. The support level means if the stopriis going wnwar the support level will give the pria support anwill make the pristabove the level rather thfall below it. Tim es not want to sell the stocks immeately, but he are concerneabout the possibility of a huge loss if the stoprifalls below the support level. Whiof the following statements is correct? A.Short sell orr is most appropriately aress Tim's concern. B.Gootill-cancellestop sell orr is most appropriately aress Tim's concern. C.Gootill-cancellestop buy orr is most appropriately aress Tim's concern. B is correct.To aress Tim's concern, a gootill-cancellestop sell orr is the most appropriately orr. If the stopriclines below $15, the orr will triggere Sometimes, this orr is referreto a gootill-cancellestop loss sell orr. If the stoare generally bullisheanhno sale signals, investors who short selling the stowoulexpectea loss. When the stopriis increasing, a stop buy orr is placeto buy the stock.考点Execution Instructions这道题就是说一个投资者有200只股票，现在价格是每股20元，技术分析得到该股票的阻力位是15元（通常跌倒15元就会反弹）。但是如果股票真的跌破阻力位就会出现巨大亏损，投资者目前还不想卖股票，但他也担心出现跌破阻力位的情况，所以应该发布什么指令呢?A就是一个正常的以市场价格卖空的指令，但题干明确说除非大跌TIM并不想现在就卖。B:投资者现在拥有股票，希望在未来股票价格跌破15时卖出止损，这就是gootill cancellestop sell orr的作用，stop orr是一个有效性指令，当价格触碰15才会执行卖出指令C:stop buy不能解决TIM的顾虑，因为他持有股票担的是股票下跌而不能及时止损，而C是通常是卖空方用来止损的指令。 都是要卖出， C的说是给卖空方的。B 和 C 还是没有分清楚 C哪里不对
NO.PZ2018062002000029 Gootill-cancellestop sell orr is most appropriately aress Tim's concern. Gootill-cancellestop buy orr is most appropriately aress Tim's concern. B is correct. To aress Tim's concern, a gootill-cancellestop sell orr is the most appropriately orr. If the stopriclines below $15, the orr will triggere Sometimes, this orr is referreto a gootill-cancellestop loss sell orr. If the stoare generally bullisheanhno sale signals, investors who short selling the stowoulexpectea loss. When the stopriis increasing, a stop buy orr is placeto buy the stock. 考点Execution Instructions 这道题就是说一个投资者有200只股票，现在价格是每股20元，技术分析得到该股票的阻力位是15元（通常跌倒15元就会反弹）。但是如果股票真的跌破阻力位就会出现巨大亏损，投资者目前还不想卖股票，但他也担心出现跌破阻力位的情况，所以应该发布什么指令呢? A就是一个正常的以市场价格卖空的指令，但题干明确说除非大跌TIM并不想现在就卖。 B:投资者现在拥有股票，希望在未来股票价格跌破15时卖出止损，这就是gootill cancellestop sell orr的作用，stop orr是一个有效性指令，当价格触碰15才会执行卖出指令 C:stop buy不能解决TIM的顾虑，因为他持有股票担的是股票下跌而不能及时止损，而C是通常是卖空方用来止损的指令。 通过short sell对冲的价格下降的效果应该比stop sell好吧！请老师解答一下
Gootill-cancellestop sell orr is most appropriately aress Tim's concern. Gootill-cancellestop buy orr is most appropriately aress Tim's concern. B is correct. To aress Tim's concern, a gootill-cancellestop sell orr is the most appropriately orr. If the stopriclines below $15, the orr will triggere Sometimes, this orr is referreto a gootill-cancellestop loss sell orr. If the stoare generally bullisheanhno sale signals, investors who short selling the stowoulexpectea loss. When the stopriis increasing, a stop buy orr is placeto buy the stock. 考点Execution Instructions 这道题就是说一个投资者有200只股票，现在价格是每股20元，技术分析得到该股票的阻力位是15元（通常跌倒15元就会反弹）。但是如果股票真的跌破阻力位就会出现巨大亏损，投资者目前还不想卖股票，但他也担心出现跌破阻力位的情况，所以应该发布什么指令呢? A就是一个正常的以市场价格卖空的指令，但题干明确说除非大跌TIM并不想现在就卖。 B:投资者现在拥有股票，希望在未来股票价格跌破15时卖出止损，这就是gootill cancellestop sell orr的作用，stop orr是一个有效性指令，当价格触碰15才会执行卖出指令 C:stop buy不能解决TIM的顾虑，因为他持有股票担的是股票下跌而不能及时止损，而C是通常是卖空方用来止损的指令。 由于答案中“gootill-cancellestop sell orr”这样的指令比较难理解，如果指令的表达方式不是很多，可否穷举类似的指令，并加上中文翻译，让我们方便记忆
