Allied Parts was organized on May 1, 2015, and made its first purchase of merchandise on May 3. The purchase was for 2,000 units at a price of $9 per unit. On May 5, Allied Parts sold 1,200 of the units for $13 per unit to Baker Co. Terms of the sale were 2/10, n/60. a. On May 7, Baker returns 420 units because they did not fit the customer's needs. Allied Parts restores the units to its inventory. b. On May 8, Baker discovers that 100 units are damaged but are still of some use and, therefore, keeps the units. Allied Parts sends Baker a credit memorandum for $500 to compensate for the damage. c. On May 15, Baker discovers that 120 units are the wrong color. Baker keeps 72 of these units because Allied Parts sends a $140 credit memorandum to compensate. Baker returns the remaining 48 units to Allied Parts. Allied Parts restores the 48 returned units to its inventory. Prepare entries for Allied Parts to record the May 5 sale and each of the above separate transactions using a perpetual inventory system.