10. The term "relevant range" as used in cost accounting means the range over which: a. Relevant costs are incurred. b. Costs may fluctuate. Cost relationships are valid. d. Cost data is available. C. 11. (5 points) Classify each of the following costs as either direct or indirect for each product by placing an "X" in the appropriate "Direct" or "Indirect column on the blank line provided. Direct Indirect Assembly line labor wages Plant manager's wages Depreciation on the assembly line Material parts for units Warehouse insurance costs