. —We’re going to Paris for Sylvia’s birthday. But it’s a secret.

—Is it? OK, I________ her.

A．am not going to tell

B．will not tell

C．haven’t told

D．am not telling

左乳内动脉最常用于哪一支冠脉的旁路移植（）

A.右冠状动脉

B.锐缘支

C.后降支

D.前降支

E.钝缘支