Holding other factors constant, a company's contribution margin per unit will increase with: a. any increase in variable cost per unit b. increase in its total fixed costs c. any increase in quantity sold. O d. any increase in the selling price per unit e. All answers given are NOT correct. Which of the following statements about CVP analysis is false? 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. Operating income calculations in CVP analysis are based on contribution margin not gross margin. c. Total revenues and total costs are linear in relation to output units. d. Unit selling price, unit variable costs, and unit fixed costs are known and remain constant e. All of the given answers are true