Comparing a pure monopoly and a purely competitive firm with identical costs, we would find in long-run equilibrium that the pure monopolist's:_______
A. price, output, and average total cost would all be higher.
B. price, output, and average total cost would all be lower.
C. price and average total cost would be higher, but output would be lower.
D. price and output would be lower, but average total cost would be higher.