Based on the following production and sales estimates for May, determine the number of units expected to be manufactured in May. Estimated inventory (units), May 1 30,000 Desired inventory (units), May 31 25,000 Expected sales volume (units): South region 20,000 West region 40,000 North region 20,000 Unit sales price $10 a. 75,000 b. 85,000 c. 105,000 d. 80,000