Informatlon concerning a product produced by Ender Company appears here: Required Dotermine the following: a. Contribution margin per unit. b. Number of units that Ender must sell to break even. c. Sales ievel in units that Ender must reach to earn a profit of $142,500. d. Determine the margin of safety in units, soles dollars, and as a percentage. Complete this question by entering your answers in the tabs below. a. Contribution margin por unit. b. Number of units that Ender must sell to break even. c. Sales level in units that tnder munt reach to earn e pront of $142,500. Required Determine the following: a. Contribution margin per unit. b. Number of units that Ender must sell to break even. c. Sales level in unlts that Ender must reach to earn a profit of $142.500. 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. Determine the margin of safety in units, sales dollars, and as a percentage. (Round "Percentage" answer to 1 decirial place (i.e., 0.234 should be entered as 23.4).)