Manning Corporation uses the periodic inventory system. On April 1, Manning Corporation sells merchandise on account for $15,000 with terms 1/15, n/30. Manning Corporation had paid $6,000 to acquire the merchandise. The buyer is not satisfied with some of the merchandise and on April 7 returns merchandise with an invoice price of $1,000 to Manning Corporation. The merchandise returned to Manning Corporation had cost Manning Corporation $600. On April 10, the buyer pays for the merchandise it retains. How would Manning Corporation record the buyer’s return of merchandise on April 7?