What do you call to when the fixed cost is raised to a higher level at a specific point and then held at the new fixed cost for a new relevant range? Select one: a. Step Fixed Cost b. Step Variable Cost c. Mixed Cost d. Relevant Range Which of the following assumptions must be considered in performing CVP analysis. Select one: a. If a company sells more than one product, those items are sold in the same mix; that is, each accounts. b. Costs are not affected when activity changes. c. Everything produced is not sold. d. Total fixed costs is not constant