Vulcan Co. uses the perpetual inventory method. The inventory records for Vulcan reflected the following Jan 1 Beginning Inventory 300 units @$2.10 Jan 12 First Purchase 400 units $2.40 Jan 21 Second Purchase 600 units @$2.50 Jan 31 Sales 800 units $5.00 Assuming Vulcan uses a FIFO cost flow method, the ending inventory on January 31 is Select one: OA $980 OB. $1,110 OC. $1,250 OD. $880