** Please use the flowing information of Adelphi Corp. to answer following 4 questions Sales Fixed Variable Costs Operating Units Costs Income Sold In Total ? ? $112,500 $67,500 5,000 Contribution margin per unit = 40% What is the amount of contribution margin (per unit)? Select one: a. $36. b. 45. c. $50. d. $90. ** Same information as above ** What is the amount of break-even point (in unit)? Select one: a. 3,500 units. b. 2,500 units. c. 3,520 units. d. 3,125 units. ** Same information as above ". What is the amount of total sales (in dollars) in order to earn Operating Income of $67,500? Select one: a. $400,000 b. $420,000. c. $450,000. d. $500,000. ** Same information as above What is the amount of Variables Costs (in dollars) in total to earn Operating Income of $67,500? Select one: a. $280,000. b. $270,000 c. $ 250,000. d. $200,000