All of the Following,except One,are True at the Output Where

Multiple Choice

All of the following,except one,are true at the output where a monopolist's marginal revenue is equal to zero? Which is the exception?

A) It is the output that maximizes total revenue.
B) It is the output that maximizes average revenue.
C) It is the output that is associated with the mid-point of the AR curve.
D) It is the output where average revenue must be greater than marginal revenue.