Production and sales estimates for June for Cardinal Co. are as follows: Estimated inventory (units), June 1 20,000 Desired inventory (units), June 30 19,000 Expected sales volume (units): Territory X 7,000 Territory Y 4,000 Territory 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