Required information Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases Also, on December 15, Monson sells 30 units for $25 each. Purchases on December Purchands on December 14 Purchase on December 21 20 810.00 cost 36 wnita 15.00 cm 30 unite 10.00 cost Required: Monson uses a perpetual Inventory system. Determine the costs assigned to the December 31 ending inventory based on the PFO method Perpetual FIFO Good Purchased Inventor Balance Cost of Goods Sold Cost Per Cost of Goods of ol Units Sold Cast Per Unit of Units Goode Purchased Cost Per Una Inventory Balance Unit Bold December 7 December 16 December 15 December 21