On December 1, Buffalo Electronics has three DVD players left in stock. All are identical, and all are priced to sell at $78. One of the three DVD players left in stock, with serial #1012, was purchased on June 1 at a cost of $47. Another, with serial #1045, was purchased on November 1 for $43. The last player, serial #1056, was purchased on November 30 for $37. (a) Calculate the cost of goods sold using the FIFO periodic inventory method, assuming that two of the three players were sold by the end of December, Buffalo Electronics' year-end. The cost of goods sold using the FIFO $