Wang Ltd. provided the following purchases and sales for the month of January. Wang Ltd. uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Jan. 1 Beginning inventory 200 $2,000 $10 Jan. 12 Purchase 501 6001 12 Jan. 14 Sale 1501 Jan. 15 Purchase 150 2,1001 14 Jan. 20 Purchase 200 3,000 15 Assuming the use of the weighted average cost flow assumption, what is the cost of the ending inventory? 1) $6,200 2) $5,775 3) $1,925 4) $5,450