If a university expects $160,000 in ticket revenue from five home football games and $180,000 in ticket revenue if it adds a sixth game, the

A) marginal revenue of the sixth game is $20,000,
B) marginal revenue of the sixth game is $30,000.
C) sixth game will cost more than each of the previous five games.
D) university should add a sixth game only if the average cost of a game is less than $30,000.

A