The girl can't be Mary, for she _____. [ ]

A. has been to London 

B. has gone to Paris

C. was going to London

D. had gone to Paris

仲裁协议独立存在，合同的变更、解除、终止或者无效，（）的效力。

A.影响仲裁协议

B.不影响仲裁协议

C.必然影响仲裁协议

D.可能影响仲裁协议