With no explanation, chose the best option from "A" or "B". Charles is standing in a long line at the grocery store, and wants to ask the cashier if he can run back to grab milk without losing his place. Charles wants to try to be heard by the clerk.

A: Charles pushes the man in front of him trying to get to where the cashier can hear him.
B: Charles asks the man in front of him if he can please get through to ask a question to the clerk.
B.