Exercise 15-29 (Algo) Evaluate Transfer Pricing System (LO 15-2) Southfield Division offers its product to outside markets for $120. It incurs variable costs of $45 per unit and fixed costs of $141,500 per month based on monthly production of 22,500 units. Northfield Division can acquire the product from an alternate supplier for $125 per unit or from Southwest Division for a transfer price of $120 plus $7 per unit in transportation costs. Required: a. What are the costs and benefits of the alternatives available to Southfield Division and Northfield Division with respect to the transfer of Southfield Division's product? Assume that Southfield Division can market all that it can produce. b. How would your answer change if Southfield Division had idle capacity sufficient to cover all of Northfield Division's needs