With no explanation, chose the best option from "A" or "B". John is in the front of a long line at a busy bakery well known for their delicious doughnuts. John wants to buy some doughnuts.

A: John buys a couple of doughnuts, leaving the rest for the other customers.
B: John buys every single last doughnut, leaving none for all the other people who have been waiting in line.
A.