Suppose That a Price Taker Confronts a Price of $6

Suppose that a price taker confronts a price of $6 and produces 650 units.For this to be the point of profit maximization,

A) total cost must exceed total revenue.
B) the marginal cost of producing the 650^th unit must be $6.
C) total revenue must exceed total cost.
D) the marginal cost of producing the 650^th unit must be less than $6.
E) total revenue must equal total cost.