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Perez Company incurs annual fixed costs of $73.400. Variable costs for Perez's product are $21.00 per unit, and the sales price is $35.00 per unit. Perez desires to eam an annual profit of $61,000 Required Use the per unit contribution margin approach to determine the sales volume in units and dollars required to earn the desired profit (Do not round intermediate calculations. Round your final answers to the neorest whole number.) Information concerning a product produced by Ender Company appears here: 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 $222,000. 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. Complete this question by entering your answers in the tabs below. 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 $222,000. Determine the margin of safety in units, sales dollars, and as a percentage. (Round "Percentage" answer to 1 decimal place (i.e., 0.234 should be entered as 23.4).)