Sundance Systems has the following transactions during July. July 5 Purchases 50 LCD televisions on account fron Red River Supplies for $3,000 each, terms 2/10, n/30. July 8 Returns to Red River four televisions that had defective sound. July 13 Pays the full amount due to Red River. July 28 Sells remaining 46 televisions from July 5 for $3,500 each on account. Record the period-end adjustment to cost of goods sold on July 31 , assuming the company has no beginning or ending inventory. (If entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.) Journal entry worksheet Note: Enter debits before credits