Question 21 (3 points) Robin Company has the following balances for the current month: Direct materials used Direct labor Sales salaries Indirect labor Production manager's salary Marketing costs Factory lease $ 19,500 $ 14,750 $ 12,300 $ 3400 $ 5700 $ 8670 $ 5200 What is Robin's total manufacturing overhead? OA) $8670 OB) $14,300 OC) $17,770 OD) $34,250