sunprogress Production and sales estimates for June are as follows: Estimated inventory (units), June 1 18,500 Desired inventory (units), June 30 19,000 Expected sales volume (units): Area X 3,000 Area Y 4,000 Area 2 5,500 Unit sales price $20 The number of units expected to be manufactured in June is Oa. 13.000 Ob. 12.000 Oc. 10.000 Od. 12.500