Product A requires 9 minutes of milling, 7 minutes for inspection, and 6 minutes of drilling per unit; product B requires 10 minutes of milling, 5 minutes for inspection, and 8 minutes of drilling per unit; product C requires 7 minutes of milling, 3 minutes for inspection, and 15 minutes of drilling. The department has 20 hours available during the next period for milling, 15 hours for inspection, and 24 hours for drilling. Product A contributes $5.8 per unit to profit, product B contributes $7.1 per unit, and product C contributes $6.2 per unit. How do you express the objective function mathematically? NOTE: Let A,B, and C denote respectively the number of A, B, and C to be produced.
a. Max A + B + C
b. Max 5.8 A Max 7.1 B Max 6.2 C
c. Min 5.8 A + 7.1 B + 6.2 C
d. Min A + B + C
e. Max 5.8 A + 7.1 B + 6.2 C