Information concerning a product produced by Campbell Company appears as follows: Sales price per unit Variable cost per unit Total annual fixed manufacturing and operating costs $ 171 $ 78 $585,900 Required Determine the following: a. Contribution margin per unit. b. Number of units that Campbell must sell to break even. c. Sales level in units that Campbell must reach to earn a profit of $316,200. a. Contribution margin per unit b. Break-even in units c. Required sales in units