Information concerning a product produced by Ender Company appears here sales price per unit Variable cost per unit Total annual fixed manufacturing and operating 173 s 85 $563,200 costs Required Determine the following a. Contribution margin per unit per unit b. Number of units that Ender must sell to break even c. Sales level in units thet Ender must reach to earn o profit of $193.600 d. Determine the margin of safety in units, sales dollars, and as o percentage. (Round "Percentage" answer to 1 decimal place (ie., 0.234 should be entered as 23.4)) Units Margin of safety