Information concerning a product produced by Ender Company appears here: $ 156 82 Sales price per unit Variable cost per unit Total annual fixed manufacturing and operating costs $451,400 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 $148,000. 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 C Reg D Determine the margin of safety in units, sales dollars, and as a percentage. (Round "Percentage" answer to 1 decimal place (ie., 0.234 should be entered as 23.4).) Units Sales Percentage % Margin of safety AloC