Production and sales estimates for June are as follows: Estimated inventory (units), June 1 Desired inventory (units), June 30 Expected sales volume (units): 18,500 19,000 Area x Area Y Area Z 3,000 4,000 5,500 $20 Unit sales price The number of units expected to be manufactured in June is Oa. 13.000 Ob. 12.000 Oc. 10,000 Od. 12,500