Kevin Ltd. just began their business at the beginning of October and purchased three inventory units at the following prices. October 8, $16; October 17, $20; and October 27, $13. If the company sold two units for $40 each - one on October 15 and the other on October 31, and used the FIFO cost formula in a perpetual inventory system, the gross profit for October would be: OA) $51 B) $44 OC) $47 OD) $37