the function of "as"
Which one is this "as?"
Everybody's complimenting your presentation as witty and entertaining.
I think it would be one of these :
(A) a preposition ー like " I accepted the information as trustworthy."
(B) a conjunction ー .... as / because (it was) witty and entertaining.
(C) a relative pronoun ー ..... presentation as/ which (was) witty and entertaining.
If you think all of them could be grammatically OK, which is the most natural to use in real life?
Thank you.