Sana's Sarees purchased merchandise on account from her supplier on July 11. The invoice price of the purchase was $6,500. The supplier offers credit terms of 2/10, n/30. The goods were shipped F.O.B shipping point at a cost of $100. On July 15, Sana returned some of the merchandise, which cost $400, because it was damaged. Sana paid the invoice on July 24. By how much did Inventory increase on July 11? a. $6,370 b. $6,600 c. $6,500 d. $6,070