For a European call option X(strike price)=25 and a European call option X=30 on the same stock with the same time to expiration, it is true that, when the 30 call is at or in the money, the pest statement we can make is:（）

A. the value of the 25 call is greater than or equal to the value of the 30 call.

B. the 30 call is worth at least as much as the 25 call.

C. the value of the 25 call is greater than the value of the 30 call.

发动机装配的零件、部件、（）和附件应符合相应的技术条件，各项装备应齐全，并按原设计的装配技术条件安装。

A.半总成

B.总成

C.工艺

D.检验