A company just starting business made the following three inventory purchases in February: Feb. 1 250 units $1350 Feb. 10 450 units 2850 Feb. 28 90 units 850 $5050 On Feb 15, there were 350 units sold. The company uses a perpetual inventory system. Using the weighted average cost formula, the balance in ending inventory on February 28 is O $5050. O $3067. O $2950. O $2100.