Campbell, Inc. sold 108,000 units last year for $4.00 each Variable costs per unit were $140 for direct materials, 5.80 for direct labor and $.20 for variable overhead. Fixed costs were $19,000 in manufacturing overhead and 315.000 in nonmanufacturing costs a. What is the total contribution margin? $ 108,000 Total Contribution Margin b. What is the unit contribution margin? (Round your answer to 2 decimal places.) Unit contribution Margin What is the contribution margin ratio? (Round your intermediate calculations to 2 decimal places! Contribution Margin Radio d. If sales increase by 38,000 units by how much will profits increase?(Round your intermediate calculations to 2 decimal places) Pro Increase