If a firm is producing 17 units and the marginal cost of an 18th unit is P10, and the price it can receive for each unit sold is P11, then

a. The total revenue of 17 units is P170.

b. the firm should produce the 18th unit because marginal cost exceeds marginal revenue.

c. the firm should produce the 18th unit because marginal revenue exceeds marginal cost.

d. the profit of the 18th unit produced would be P11.

e. the total revenue of 18 units produced would be P180.