AHH! Corporation has three product lines with limited demand. The firm has NO fixed costs. Below are some facts about the firm. Oh! No! Way! Monthly demand (units) 100 120 140 Machine hours per unit 3 6 8 Price per unit $70 $75 $80 Variable costs per unit $60 $62 $60 The firm can only supply 1,800 hours of machine time per month between the three product lines. What is the firm's maximum monthly profit? Selected Answer: c. $4,300 Answers: a. $5,560 b. $4,510 c. $4,300 d. $4,650