Assume RST, Inc., began January with 55 units of inventory that cost a total of $935. During January, RST, Inc, purchased and sold goods as follows: (Click the icon to view the transactions.) RST, Inc., uses perpetual inventory. Under the FIFO inventory method, how much is RST's cost of goods sold for the sale on January 15 OA. $2.455 OB. $2,295 OC. $665 OD. $2.525