Requirement 1. Classify each of the preceding costs as output unit-level, batch-level, product-sustaining, or facility-sustaining. Explain each answer. Cost Item Cost-type a. Indirect manufacturing labor costs such as supervision that supports direct manufacturing labor, $935,000 Batch-level Facility-sustaining Output unit-level Product-sustaining b. Procurement costs of placing purchase orders, receiving materials, and paying suppliers related to the number of purchase orders placed, $650,000 Bat