Production and sales estimates for June are as follows: Estimated inventory (units), June 1 20,000 Desired inventory (units), June 30 19,000 Expected sales volume (units): Area X 7,000 Area Y 4,000 Area Z 5,500 Unit sales price $20 The number of units expected to be manufactured in June is a. 15,500 b. 13,500 c. 12,500 d. 11,000------PLEASE SHOW WORK