Ms. Joplin sells colored pencils. The colored-pencil industry is competitive. Ms. Joplin hires a business consultant to analyze her company's financial records. The consultant recommends that Ms. Joplin increase her production. The consultant must have concluded that, at her current level of production, Ms. Joplin's Question 14Select one: a. marginal revenue exceeds her total cost. b. total revenues equal her total economic costs. c. marginal revenue exceeds her marginal cost. d. marginal cost exceeds her marginal revenue