Charles Company had the following purchases and sales of inventory for the month of September. Note: There was no inventory before the first of the month September 1st- purchased 700 units for $8 per unit September 8th- purchased 500 units for $9 per unit September 21st - purchased 900 units 8r $6 per unit September 20th - sold 1,000 unit for $15 per unit Assuming the company uses "FIFO "what is Charles' Ending Inventory for September? O $5,600 O $7,200 O $9,200 O $8,000 O $8,300