a. Planet One sells Product A for $25 per unit. It costs the company $10 per unit to produce Product A. The company had $430,000 of fixed costs during the accounting period What is Planet One's the unit contribution margin? S per unit b. Planet Zero sells a product with a unit contribution margin of $60. The selling price of the product if $200. The company has fixed costs of $500,000 and produces a volume of 20,000 units per year. What is Planet Zero's unit contribution margin ratio