A price-taking firm is selling 100 units of a good for the market price. If the marginal cost of the 100th unit is higher than the marginal revenue of that unit,
A) the firm could increase profit by increasing the price.
B) the firm could increase profit by selling fewer units at the current price.
C) the firm could increase profit by lowering the price.
D) the firm could increase profit by selling more units at the current price.