4. At 5,000 units of production, Peltor Inc. has the following per unit production costs: Cost per Unit Direct Materials $ 3.00 Direct Labour 2.00 Variable Manufacturing Overhead $ 1.00 Fixed Manufacturing Overhead 2.00 Based on the above information, what would Peltor's total manufacturing costs be at 6,000 units? a) $40,000 b) $48,000 c) |$45,000. d) $46,000 e) |$30,000