NO.PZ2023040401000073
问题如下：
At expiration, a European put option will be valuable if the exercise price is:
选项：
A.less than the underlying price.
equal to the underlying price.
greater than the underlying price.
解释：
C is correct. A European put option will be valuable at expiration if the exercise price is greater than the underlying price. The holder can put (deliver) the underlying and receive the exercise price which is higher than the spot price. A European put option would be worthless if the exercise price was equal to or less than the underlying price.
麻烦老师在帮我对比一下欧式看跌和欧式涨期权的特点，还有跟普通看跌看涨的区别，谢谢
