21. When should process costing techniques be used in assigning costs to products?

21. When should process costing techniques be used in assigning costs to products? A. Any time production is only partially completed during the accounting period. B. If the product is composed of mass-produced homogenous products and production is not always completed as to all elements of production during the accounting period. C. If the product is manufactured according to customer specifications. D. All of the above.