2.B or not 2.B
When it has metaphor.
Because in charge Yoda was.
Pupil: Well if I could there wouldn't be much point in me being here!
Well, I don't know" she answers shyly. "OK, that I give you another year to think about it..."
A: So they don't get a concussion while bobbing their from head side to side as they are saying "I don't know " whenever you ask them a question.