The Figure Given Below Shows the Revenue and Cost Curves

The figure given below shows the revenue and cost curves of a perfectly competitive firm.Figure 10.5
MC: Marginal cost curve
MR: Marginal revenue curve.ATC: Average-total-cost curve
AVC: Average-variable-cost curve
-If a profit-maximizing, perfectly competitive firm is making only a normal profit in the short run, then the firm is in:

A) disequilibrium.
B) equilibrium where MR exceeds minimum ATC.
C) equilibrium where MR equals minimum AVC.
D) equilibrium where P = AFC.
E) equilibrium where P = ATC