With no explanation, chose the best option from "A" or "B". Bill wins two tickets to an all-expenses paid vacation from a sweepstakes he enters, and both his girlfriend and his best friend want to go with him. Bill wants to give the second ticket to someone.

A: Bill gives the ticket to his girlfriend, and they go on vacation together.
B: Bill gives the ticket to his best friend, and they go on vacation together.
A.