A monopolistically competitive firm is operating at a short-run level of output where price is $21, average total cost is $15, marginal cost is $13, and marginal revenue is $13. In the short run this firm should

A) reduce product price.
B) increase the level of output.
C) decrease the level of output.
D) not change the level of output.

Monopolistically Competitive

A market structure where many firms sell products that are similar but not identical, allowing for some degree of market power in setting prices.

Average Total Cost

The total cost of production divided by the number of units produced, indicating the cost per unit of output.

Marginal Cost

The additional cost incurred by producing one more unit of a product or service, an essential concept for understanding optimal production levels and pricing strategies.