AND Answer Question B. There is an image below showing four graphs of different cost behaviors. (If you cannot see the image, please contact MCCC IT Help at 215-641-6495.) Which graph most accurately describes the 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 a. Natural gas to heat the factory furnaces, $450 per month plus $1.25 per cubic foot b. 24-hour factory security, $12,000 per month c. Per-unit direct materials cost d. Total direct labor cost e. Per-unit cost of straight line depreciation on factory equipment f. Total cost of quality control department, $5000 per month plus $4 per unit