C, $70,000 d. $30,000 18. Stu n, a retailer, plans to sell 28,000 units of Product X during the month of August. If the t Corporatio company has 6,000 units on hand at the start of the month, and plans to have 9,000 units on hand at th end of the month, how many units of Product X must be purchased from the supplier during the mon a. 37,000 b. 25,000 c. 31,000 d. 28,000