Which equation best represents the situation?
Cara served pizza and punch at a party. Each pizza fed 6 people, and each guest received a glass of punch. If a glass of punch cost 50¢ and Cara spent $2.50 for each guest, what was the cost of each pizza?

A.x/6 + 0.50 = 2.50


B.6x + 0.50x = 2.50


C.x/6 + 50 = 2.50


D.6x - 2.50 = 0.50