老师麻烦这题

问题如下：

Which of the following statements correctly describes an important distinction between the two strategies of buying a put option and selling a call option with respect to option time value decay?

选项：

A.Time value decay is a benefit to both option strategies.

B.Time value decay is a cost to both option strategies.

C.Time value decay is a benefit to selling a call option and a cost to buying a put option.

解释：

C is correct. The time value component of an option premium declines toward zero as time passes toward the expiration date. A purchased option declines in value, all else equal, because of the time value decline. A sold option increases in value, all else equal, because of the time value decline. A is incorrect as time value decay is a cost to the purchased put option strategy, and B is incorrect as time value decay is a benefit to the sold option strategy.