EX 6-2 Identify cost graphs The following cost graphs illustrate various types of cost behavior: Cost Graph One Cost Graph Two 0 Total Units Produced 0 Total Units Produced Cost Graph Three Cost Graph Four $ 0 Total Units Produced 0 Total Units Produced For each of the following costs, identify the cost graph that best illustrates its cost behavior as the number of units produced increases: a. Total direct materials cost b. Electricity costs of $1,000 per month plus $0.10 per kilowatt-hour Per-unit cost of straight-line depreciation on factory equipment d. Salary of quality control supervisor, $20,000 per month e. Per-unit direct labor cost Obj. 1