In a Cournot-Nash Equilibrium

In a Cournot-Nash equilibrium:

A) Firms firm select their output levels to maximize joint profits.
B) Firms select an output level that maximizes product prices.
C) A firm selects its output level to maximize total revenues given the output level of its rivals.
D) A firm selects its output level that maximizes its own profit given the output level of its rivals.
E) None of the above are correct.