4 Exercise 3-5A (Algo) Contribution margin per unit approach for break-even and desired profit LO 3-1 33 pints Information concerning a product produced by Stuart Company appears as follows: Sales price per unit Variable cost per unit Total annual fixed manufacturing and operating costs $ 155 $ 92 $409,500 eBook Required Determine the following: References a. Contribution margin per unit. b. Number of units that Stuart must sell to break even. c. Sales level in units that Stuart must reach to earn a profit of $126,000. a. Contribution margin per unit b. Break-even in units c. Required sales in units