Calculator following lots of Commodity p were available for sale during the year. Use this information to answer the question. 5 units at $61 15 units at $63 10 units at $74 10 units at $77 Third purchase The firm uses the periodic system and there are 20 units of the commodity on hand at the end of the year What is the amount of cost of goods sold for the year according to the FIFO method? da. $1,250 ob. $1,510 Cc. $1,380 d. $1,375