The best answers to the incomplete statements above would be that based on the interactions between Pahom and the Devil, Pahom is the type of character known as the protagonist while the Devil is intended to be as the antagonist. The former is usually the main character of the story and the latter is the villain.
I would say B is not an appropriate thesis.
They are both faces you show when not satisfied. a frown is more sad though and a grimace is more out of anger and hate.
