assume smart touch learning had 2 tablets in its beginning inventory, each with a cost of $300 each. on January 5, smart touch learning purchase 5 tablets at a cost of $310 each. on January 15, smart touch learning sold 3 tablets to a customer. if the company is using the fifo method, then the cost of goods sold on January 15 under a perpetual inventory system would be $910. true or false?