8. B&B Supplies maintains its hand-held graphing calculator inventory using the perpetual inventory method. The inventory records for May follow: Beginning inventory 20 units @ $105 each May 12 purchase 30 units @ $120 each May 20 sale 40 units @ $195 each May 25 purchase 15 units @ $115 each Using the weighted average cost method, how much will B&B report as gross profit for May? A. $4,995 B. $3,240 C. $3,480 D. $3,325