NO.PZ2022061307000016
问题如下：
QuestionA trader buys a stock at $30 and wants to limit downside risk. Which of the following orders will most likely guarantee that he can sell the stock at $25? (GTC means good till cancelled)选项：
A.Put option buy market order with a strike price of $25
B.GTC, stop $25, limit $25 sell order
C.GTC, stop $25, market sell order
解释：
SolutionA is correct. Option contracts can be viewed as limit orders for which execution is guaranteed at the strike price. Therefore, a put buy order at a strike price of $25 will guarantee selling the stock at $25.
C is incorrect. A “GTC, stop $25, market sell” order becomes a market order when the price drops to or below $25 and is executed at the best price available in the market. Thus, the selling price of $25 is not guaranteed.
B is incorrect. A “GTC, stop $25, limit $25 sell” order limits the lower boundary to $25 but it does not guarantee execution at $25; in a fast-moving market prices may have dropped below the limit and the order will then not be executed.
请问B和C怎么理解，适用何场景
