Beethoven Music Company started business in March 2018. Sales for its first year were $320,000. Beethoven priced its merchandise to yield a 45% gross profit based on sales dollars. Industry statistics suggest that 10% of the merchandise sold to customers will be returned. Beethoven estimated its sales returns based on the industry average. During the year, customers returned $26,000 in sales. Beethoven uses a perpetual inventory system. Required: 1. Prepare the journal entry to record the sale. 2. Prepare the journal entry to record sales returns. 3. Prepare the journal entry to record the year-end adjusting entry for estimated sales returns. Assume that cash has not yet been collected for merchandise that could yet be returned.