Jarvis Golf Company sells a special putter for $20 each. In March, it sold 28,000 putters while manufacturing 30,000 . There was no beginning inventory on March 1. Production information for March was: Reguired: a. Compute the cost per unit under both absorption and variable costing b. Compute the ending inventories under both absorption and variable costing c. Compute operating income under both absorption and variable costing