Record the following transactions on the books of Marsh Co:
(a) On September 1, Marsh Co. sold merchandise on account to Pellerin Inc. for $20,000, terms 2/10, n/30. The cost of the merchandise sold was $12,000. Marsh Co. uses a perpetual inventory system.
(b) On September 4, Pellerin Inc. returned merchandise worth $4,000 to Marsh Co. The original cost of the merchandise was $2,400. The merchandise was returned to inventory.
(c) On September 10, Pellerin Inc. paid for the merchandise.