RJ, Inc. had the following activity for an inventory itern during June: Unit Units Cost Beginning inventory 50 $10 Purchase (June 5) 10 16 N Purchase (June 15) 30 14 Sale (June 20) 40 Sale (June 25) 10 Purchase (June 30) 10 25 Refer to Exhibit 7-4. Assuming RJ, Inc, uses a periodic weighted average cost flow assumption, COGS for June would be O $665 O $708 $725 $532