Which of the following statements concerning the high-low method of mixed cost analysis is true? 50 on Select one: O a. The high-low method of mixed cost analysis always shows the fixed cost component of mixed costs to be zero b. The high-low method of mixed cost analysis can be influenced by extreme values or outliers O c. The cost formula resulting from the high-low method of mixed cost analysis is based on least squares O d. The high-low method of mixed cost analysis provides the best fit for all of the data