19. Marathon Manufacturing Company can make 10,000 units of a necessary component part with the following costs per unit: Direct Materials $15 Direct Labor Variable Overhead Fixed Overhead Product cost per unit $55 Marathon Manufacturing Company can purchase the component externally for $38 per unit. Only 25% of the total fixed costs can be avoided. What is the correct make-or-buy decision in order to maximize net income? a. Make and save $12,000 6 Buy and save $12,000 C. Make and save $20,000 Buy and save $20,000