Consider the following statements regarding product-sustaining activities: I. The costs are driven based on number of batches that are run. II. The costs are driven by the number of raw materials used to produce a product. III. The costs are driven based on the number of different products or parts. IV. The costs are driven based on the percent of plant usage for a given product. Which of the above statements is (are) true?

		I only.
		II only.
		III only.
		I and II.
		IV.