I’m sure it wasn’t Mr. Phong you saw because he’s...

Câu hỏi: I’m sure it wasn’t Mr. Phong you saw because he’s in Hanoi.  

A It couldn’t be Mr. Phong you saw because he’s in Hanoi. 

B You mustn’t have seen Mr. Phong because he’s in Hanoi

C It can’t have been Mr. Phong you saw because he’s in Hanoi.

D Mr. Phong mightn’t see you because he’s in Hanoi.