at to about with in

[Mike12345]

Everyone was surprised___ what he said.

A at
B to
C about
D with
E in

Which one is right? A,B,C,D, or E? In my opinion, C must be wrong, for a verb should be after "to", but "what he said" is like a noun. So I think A, C, D, E are correct, in that they all can be followed by a noun.

 

[Tdol]

It's not a good question as more than one answer could be correct, and by, which may be the most obvious answer, is missing.

 

[Raymott]

A (at) is the best answer.
You are incorrect in thinking that a verb must follow 'to'. "I listened to what he said."