if sales volume increases and all other factors remain constant, then the: Select one: a. margin of safety will decrease, b. contribution margin ratio will not change. O c. break-even point will decrease O d. net operating income will decrease. e. None of the given answer is correct Question 2 Not yet answered Marked out of 1 Flag question Which of the following is true regarding the contribution margin of a company that produces only a single product? Select one: a. The contribution margin ratio will decline as unit sales decline. b. The contribution margin per unit multiplied by the selling price per unit equals the contribution margin ratio, O c. As fixed expenses decrease, the contribution margin ratio increases. d. The contribution margin per unit equals the selling price per unit less the variable expense per unit. e. None of the given answer is correct