Suppose Susan owns a business that operates in a market characterized by monopolistic competition. Susan's profit-maximizing price is $12, her profit-maximizing output is 900 units per week, and her profits are $1,800 per week. Susan decides that she needs more profits and therefore raises her price to $15. At the new price of $15:
A) profits will increase.
B) profits will remain at $1,800.
C) marginal revenue will be greater than marginal cost.
D) marginal revenue will be less than marginal cost

C) marginal revenue will be greater than marginal cost. 

Explanation:

A monopolistic competition is when there are many buyers of differentiated goods. The demand curve of a monopolistic competition is downward sloping. This downward sloping demand curve indicates that there's a negative relationship between price and quantity demanded.

If Susan increases her price to $15, all things being equal, Quanitity demanded would fall and her profit would fall.

At the profit maximising price of $12, marginal revenue is equal to marginal cost. So if price is increased to $15, marginal revenue would exceed marginal cost.

I hope my answer helps you

answer; ///i believe the correct answer is (c) laissez-faire;

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