QUESTION 6 A company using the perpetual inventory system purchased iventory worth $21,000 on account with terms of 3/10, n/30. Defecive inventory of $1,000 was returned two days later, and the accounts were appropriately adjusted. If the ivolce is paid within 10 days, the amcunt of the purchase discount that would be available to the company is $600 ab $660 c$630 d s620