ProBuilder reports merchandise sales of $70,000 and cost of merchandise sales of $14,000 in its first year of operations ending June 30. It makes fiscal-year-end adjusting entries for estimated future returns and allowances equal to 3% of sales, or $2,100, and 3% of cost of sales, or $420. a. & b. Prepare the June 30 fiscal-year-end adjusting journal entry for future returns and allowances related to sales and cost of sales.