Skolnick Corporation has provided the following information: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Sales commissions Variable administrative expense. Fixed selling and administrative expense Required: Cost per Unit Cost per Period $ 5.80 $ 4.00 $ 2.10 $ 144,000 $ 1.30 $ 0.70 $ 41,400 a. If 9,000 units are produced, what is the total amount of direct manufacturing cost incurred? (Do not round intermediate calculations.) b. If 9,000 units are produced, what is the total amount of indirect manufacturing costs incurred? a. Total direct manufacturing cost b. Total indirect manufacturing cost