Riverside Software began January with $3,550 of merchandise inventory. During January, Riverside made the following entries for its inventory transactions. What was the value of Riverside's inventory at the end of January? A. $6,000 B. $5,000 C. $4,550 D. $0 The sum of ending inventory and cost of goods sold is A. net purchases. B. gross profit. C. goods available for sale. D. beginning inventory