Chamian Deep Kaur: Attempt 1 From the costs reported below, identify all costs that are variable in relation to how many units are produced (or sold). Salary expense for accountant. Advertising in local newspaper. Rearview mirrors used at a car manufacturing plant. Salespersons commissions at a car dealership. Depreciation on the sales building at a car dealership. Monthly rent on the production factory. Cost of cheese used at a pizza restaurant. Shipping costs to ship cars from the manufacturing plant to dealerships.