Information concerning a product produced by Ender Company appears here: Sales price per unit Variable cost per unit Total annual fixed manufacturing and operating costs $ 5 165 78 $598,400 Required Determine the following: a. Contribution margin per unit b. Number of units that Ender must sell to break even c. Sales level in units that Ender must reach to earn a profit of $167,200. d. Determine the margin of safety in units, sales dollars, and as a percentage Complete this question by entering your answers in the tabs below. Reg A to RegD a. Contribution margin per unit: b. Number of units that Ender must sell to break even c. Sales level in units that Ender must reach to earn a profit of $167,200. per unit a Contribution margin b. Break-even in units Sales in units ReqD> PA