In western countries, when your friend offers (提供 )you something, you can accept it directly(直接地), or refuse it politely. Therefore, which situation fits the western custom?
A、At a restaurantA: Help yourself to some fish.B: No. I don't like eating fish at all.
B、At your birthday party A: Here's a present for you.B: I don't need it. You shouldn't spend so much money.
C、At a barA: Would you like something to drink, beer or wine?B: A glass of beer, please.