Determine the cost of goods sold for the transaction on October 25 using the perpetual inventory system and the FIFO method. Date Item Units Cost Total Beginning inventory 5 $10 $50 October 4 Purchase 8 11 88 October 8 Sale 6 October 20 Purchase 15 12 180 October 25 Sale 12 a.$138 b.$180 c.$144 d.$137\