Part 4 of 4 3 points eBook A Required information Use the following information for the Quick Study below. (Algo) (11-14) [The following information applies to the questions displayed below] Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December 15, Monson sells 15 units for $34 each. Purchases on December 7 Purchases on December 14: Purchases on December 21 10 units @ $20.00 cost 20 units @ $26.00 cost 15 units @$28.00 cost