与全口义齿后缘无关的解剖标志是（）

A.腭小凹

B.前颤动线

C.后颤动线

D.翼上颌切迹

E.磨牙后垫

—Did you go to Tom's birthday party?

—No, I _______. [ ]

A. am not

B. didn't

C. can't

D. isn't