Gordon Company has the following data available: Transaction Units Purchased Unit Cost Units Sold Beginning Inventory 300 $20 March 1 Purchase 200 $12 April 25 Sale 330 June 10 Purchase 360 $14 July 20 Sale 240 October 30 Purchase 310 $15 December 15 Sale 360 If Gordon Company uses a perpetual FIFO inventory system, the cost of ending inventory on December 31 is O A. $13,950 O B. $18,600 O C. $3,600 OD. $4,800