With no explanation, chose the best option from "A" or "B". Tim is at school and notices that his classmate Bill has a piece of toilet paper stuck to his shoe. Tim wants to inform Bill about the toilet paper on his shoe.

A: Tim tells Bill that there is toilet paper stuck to his shoe in front of the whole class.
B: Tim waits until class is over and discretely informs Bill about the toilet paper on his shoe.
B.