某投资者以4.5美分的权利金卖出一份执行价格为750美分的标的资产的看跌期权，该期权的盈亏平衡点为（）。

A.744.5美分

B.754.5美分

C.745.5美分

D.749美分

Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.

A.one target

B.two targets

C.three targets

D.a large number of targets