On November 8, 2020, Bison Ltd. sold Asper Co. products for $10,000 on credit and the products had cost Bison $4,000. The expected return rate is 5%. On December 29, 2020, Asper returned products worth $400 to Bison and the returned products had a cost of $160 and are still in saleable condition. What is the balance of Estimated Inventory Returns as at December 29, 20207 $40 on credit $100 on credit $100 on debit $40 on debit