The Assembly Department had 4.500 units of beginning inventory in September, and 6.000 unts were transferred to from the Outing Department. The Assembly Department completed 3.000 units during the month and transferred them to the Packaging Department Determine the lumber of units to account for by the Assembly Department OA 3.000 units 4.500 units OC. 7.500 units OD 10.500 units