James will need to decrease the marginal revenue to reduce his output.
What happens when marginal revenue equals marginal cost?
This is known as an economic equilibrium and there is no economic profit in such equilibrium.
To incur profit now, he will have need to decrease the marginal revenue to reduce his output
Therefore, the Option B is corrrect
Missing options "will increase profits, will decrease marginal revenue, can charge a higher price."
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