Which of the following statements related to cost estimation methods is true? Da The most complex method of cost estimation is the high-low method Ob. The scatter-graph method is used to drive an estimated line of cost behavior by graphically connecting the two con una entified with the highest and lowest volume level Oc The High-low method is the most accurate and reliable method to determine the cost behavior compared to scatter graph plot and let que repression methods Od None of the given answers The three methods determine a slope and an intercept