Heidelberg Fabrication manufactures two products, G-09 and G-35: Production at the plant is automated and any labor cost is included in overhead. Data on manufacturing overhead at the plant follow: a. Heidelberg currently applies overhead on the basis of machine-hours. What is the predetermined overhead rate for the quarter? Note: Round your answer to 2 decimal places. b. Heidelberg is thinking of adopting an ABC system. They have tentatively chosen the following cost driversi machine-hours for machine depreciation, production runs for setup labor, and direct material dollars for materials handling. Compute the cost driver rates for the proposed system at Heidelberg