Suppose a firm has two types of customers but cannot tell which type of buyer the customer is before a purchase is made. If the firm wanted to use quantity discounting, it should charge _ per unit for any quantity purchased or Group A Group B Price ($) 10- Price ($) 20- 9 - MC A MC MR 5 6 7 8 910 5 6 Quantity Quantity O a. $7; $4 for 2 or more units, but the pricing scheme would not be incentive-compatible for Type A customers O b. $8.50; $4 for 3 or more units O c. $12; $4 per unit for 4 or more units O d. $12; $7 for 3 or more units, but the pricing scheme would not be incentive-compatible for Type B customersLittle Pinehurst Miniature Golf has two types of customers: infrequent players and frequent players. Using a strategy of second-degree price discrimination, Little Pinehurst offers customers the choice of paying $15 per round of miniature golf or $12 per round for a package of 16 rounds. The pricing scheme is _ for infrequent players, and is _ for frequent players. Infrequent Miniature Gallers Price Of 20 10 12 14 16 18 20 22 Quantity O a. not incentive-compatible; incentive-compatible O b. incentive-compatible; incentive-compatible O c. incentive-compatible; not incentive-compatible O d. not incentive-compatible; not incentive-compatible