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 $ 9,000 $19,800 $17,600 $ 3,250 $ 6,200 $ 9,500 $ 3,500 What are Robin's prime costs? Multiple Choice $43,600 $50,150 $37,400 $28,800