When WeCo begins operations in 20X4, it chooses the periodic method and LIFO costing. Within a given year's LIFO layer, it uses weighted average costing. During 20X4, WeCo makes the following merchandise purchases: May 30 400 @ $4 June 24 800 @ $5 October 11 900 @ $7 December 4 1, 400 @ $6 If the December 31, 20X4 ending inventory is 1, 000 units, and the December 31, 20X5 ending inventory is 300 units, what is the 20X5 ending inventory? $1, 200 $1, 380 $1, 740 $1, 800