Complete the table below for contribution margin per unit, total contribution margin, and contribution margin ratio: (Click the icon to view the table.) Compute the missing information, starting with scenario A, then for scenarios B and C. (Enter the contribution margin ratio to nearest pe A B Number of units 1,720 units 12,900 units 3,600 units Sale price per unit $ 1,800 $ 400 $ 1,250 Variable costs per unit 720 300 625 Calculate: Contribution margin per unit Total contribution margin Contribution margin ratio % % %