Which of the following would decrease contribution margin per unit the most? Group of answer choices A 15% increase in selling price A 15% increase in variable expenses A 15% decrease in selling price A 15% decrease in variable expenses fa company's variable costs are 70% of sales, which formula represents the computation of peso sales that will yield a profit equal to 10% of the contribution margin when P equals sales in pesos for the period and FC equals total fixed costs for the period? Group of answer choices