Which of the following is an assumption of CVP analysis? Select one: a. Costs must be separated into separate fixed and variable components. O b. There will be a change between beginning and ending levels of inventory O C. Total revenues and total costs are curvilinear in relation to output units. d. Given revenue mixed of products is dynamic @ O e. The time value of money must be taken into account. Jill Bishop makes homemade soap She sells it for $100 a case. Her vanable costs are $40 per case. She has fixed costs of 5600 What is the break-even point in cases? Select one: 3 15 cases b. 10 cases c. 6 cases d. 20 cases e. 100 cases