Subject Company manufactures books. Manufacturing a book takes 10 units of Al and 1 unit of A2. Scheduled production of books for the next two months is 1,000 and 1,200 units, respectively. Beginning inventory is 4,000 units of Al and 30 units of AZ. The ending inventory of Al is planned to decrease 500 units in each of the next two months, and the A2 inventory is expected to increase 5 units in each of the next two months. Based on this information, the number of units of Al that needs to be purchased by Subject Company during the first month is 9.500 units. 10,000 units. 1,000 units. 10,500 units.