In which of the following sentences, the word become means "happen to often in a bad way"?

In which of the following sentences, the word become means "happen to often in a bad way"?

A.I don't know what will become of us if the company goes bankrupt.

B.She became increasingly anxious about her son's strange behavior.

C.This sort of behavior hardly becomes a person in your position.

D.Daydreams have become realities.

正确答案是A