Obj. 1 EX 20-2 Identify cost graphs The following cost graphs illustrate various types of cost behavior: Cost Graph One Cost Graph Two 5 0 Total Units Produced 0 Total Units Produced Cost Graph Three Cost Graph Four 0 Total Units Produced o 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 10