Acafe can sell 200 cups of coffee if priced at $3.00 each, or 300 cups of coffee if priced at $2.50 each. It would be profitable for the cafe to charge a price of $1.50 only if the marginal cost of cupcakes is ____? A. less than $1.50 B. less than $2.50 C. $2.00 D. more than $1.50