Which of the following statements about options is most accurate()

A. An open call position can be closed before expiration by buying put options on the underlying stocks.

B. For call options, the lower the strike price relative to the stock’s underlying price, the more the call option is worth.

C. A put writer who deposits shares of the underlying stock has written a covered put.

以下选项中需要将部件上的螺塞打开并加入指定级润滑油的部位是（）。

A.收料裁切直线导轨

B.回转架料轴驱动部位

C.横向手动调版部位

D.烘箱开启部位