What of the Following Is Completely True in Long Run $P = M C$

Multiple Choice

What of the following is completely true in long run, monopolistically competitive equilibrium?

A) the slope of the demand and average cost curves are the same, $P = M C$ , and $M C = M R$ .
B) the slope of the demand and average cost curves are negative, $P > M C$ , and $M C > M R$
C) the slope of the demand and average cost curves are positive, $P > M C$ , and $M C = M R$
D) the slope of the demand and average cost curves are the same, $P > M C$ , and $M C = M R$ .