QUESTION 3 Depreciation on a computer used in the marketing department of a manufacturing company would be classified as: a. a period cost that is variable with respect to the company's output. b a product cost that is variable with respect to the company's output. a period cost that is fixed with respect to the company's output. d a product cost that is fixed with respect to the company's output. QUESTION 4 Which costs will change with a decrease in activity within the iclevant range? Unit fixed costs and total variable cost. Total fixed costs and total variable cost. Unit fixed cost and total fixed cost. d. Unit variable cost and unit fixed cost