60 The activity for a specific inventory item for the month of March was as follow tl of Per Unit Total Units Cost Cost October 1 inventory 30 528 5840 Purchases: October 5 100 30 3.000 October 13 32 1.920 October 15 20 36 3.240 Goods Available for Sale 280 $2.000 Sales: October 8 110 October 22 120 230 Using first-in, first-out (FIFO) under a perpetual inventory system, what is the balance of Cost of Goods Sol for month ended October 31? $7,200 $6,440 $7,440 $6,900 Dag