Maximize profit

A news magazine offers students a discount on the regular subscription rate. The total number of subscriptions is optimal, and, at the current prices, the marginal revenue from the last subscription sold to a student is $6, while the marginal revenue from the last subscription sold to a regular customer is $10. In order to maximize profit, the magazine should Select one: O a. offer students a lower discount (raise the price to students). O b. offer students a higher discount (lower the price to students). O c. offer all customers the same discount received by the students. O d. stop offering students a discount on the regular subscription rate