Past relationships between cost and activity may not be a useful basis for estimating future costs?

19. Past relationships between cost and activity may not be a useful basis for estimating future costs A) if most of a company's costs are variable. if the cost is a mixed cost. if future activity levels are expected to be beyond the relevant range. the company is able to accurately estimate its cost behavior. wwavy suivot managers find CVP analysis to be a useful tool for exp I . profit targets and for performing "what if" analysis