【单选题】Pierre’s friend Henri lives in a town where he has to pay 3 francs per glass of wine and 5 francs per loaf of bread. Henri consumes 5 glasses of wine and 4 loaves of bread per day. Bob has an income o...
A.
Bob and Henri are equally well off
B.
Henri is better off than Bob
C.
Bob is better off than Henri
D.
both of them violate the weak axiom of revealed preferences
【简答题】---- Is Bob still performing? ---- I'm afraid not. He is said________ the stage already as he has become an official A. to have left B. to leave C. to have been left D. to be left