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.

某持卡的账单日是1号，到期还款日是出账单后的第25天。其10月1日的消费，最后还款日应是（）。

A.10月26日

B.11月26日

C.11月1日

D.11月25日