My wife ______the night shift when my plane ______. That’s why no one is to meet me at the airport today.

A．is working; is arriving

B．was working; arrived

C．will have worked; has arrived

D．will be working; arrives

甲与丙签订债权转让合同，将其对乙的债权转让给丙，随后甲通知了乙。下列说法正确的是( )。

A．甲随时可以撤销债权转让通知
B．只有经过丙的同意，甲才能撤销债权转让通知
C．只有经过乙的同意，甲才能撤销债权转让通知
D．乙可以拒绝接受债权转让通知，仍然向甲作出履行，消灭债务