Efficiency and perfect competition

Meliah's Maps produces road maps in a perfectly competitive market.

What is true about the quantity of maps this firm produces in the long run?

(Choice A)
The quantity is allocatively efficient but not productively efficient.
(Choice B)
Marginal benefit exceeds the marginal cost and the average total cost is minimized.
(Choice C)
Marginal benefit equals marginal cost and the average total cost is minimized.
(Choice D)
Marginal benefit exceeds marginal cost and marginal cost equals average total cost.
(Choice E)
Marginal benefit equals marginal cost and marginal cost is greater than the average total cost.

AP®︎/College Microeconomics