I _____ sooner but I didn’t know that they were waiting for me .

A．had come

B．was coming

C．would come

D．would have come

下列选项中，属于永久性抗辩权的是( )。

A．不安抗辩权

B．同时履行抗辩权

C．先履行抗辩权

D．时效经过抗辩权