What do the stage directions (bowing a little distantly) reveal about the character of Peter Stockmann?

A) He is courteous, but cold, to Hovstad.
B) He is pompous and vain pretending to be something
he is not
C) He is a man of ceremony and tries to show others
how to behave.
D) He is unsure of his role in this house, and so he
hesitates as he greets Hovstad.