Answer the question on the basis of the following data confronting a firm: $\begin{array}{l}\begin{array}{ccr}& & \text{ Marginal }\\ \text{ Output }& & \text{ Reven }\\ 0& & --\\ 1& & \$16\\ 2& & 16\\ 3& & 16\\ 4& & 16\\ 5& & 16\end{array}\begin{array}{c}Marginal\\ Cost\\ --\\ \$10\\ 9\\ 13\\ 17\\ 21\end{array}\end{array}$ Refer to the data.At the profit-maximizing output,the firm's total revenue is:

A) $48.
B) $32.
C) $80.
D) $64.

Profit-Maximizing Output

The level of production that maximizes a firm’s profits, determined by the intersection of marginal cost and marginal revenue.

Total Revenue

The total income earned by a firm from selling its products or services, calculated as the quantity sold multiplied by the selling price.

Marginal Revenue

The additional income earned by selling one more unit of a product or service.