Sky High Company has two departments, X and Y. The following estimates are for the coming year: X Y Direct manufacturing labor-hours 20,000 40,000 Machine - hours 40,000 20,000 Manufacturing overhead $200,000 $400,000 A single indirect - cost rate based on direct manufacturing labor-hours for the entire plant is O A. $30.00 per direct labor-hour O B. $10.00 per direct labor-hour O C. $15.00 per direct labor-hour OD. $20.00 per direct labor-hour