Which of the following statements about CVP analysis is false? O a Managers use (CVP) analysis to study the behavior of and relationship among the elements such as total revenues, total costs, and income O b. Unit selling price, unit variable costs, and total fixed costs are known and remain constant O c Total revenues and total costs are linear in relation to output units. O d Operating income calculations in CVP analysis are based on contribution margin not gross margin. Oe. All of the given answers are true