When performing sales mix analysis, which one of the following is false: O a The sales mix is usually assumed to be remain the same. O b. Normally the calculation of the breakeven point for multiproduct is more complicated than that for a single product. O c. Producing and selling more units of the product with a higher contribution margin would likely decrease the breakeven point O d. Shifting the sales mix to the product with a lower contribution margin will likely ncrease the overall contributions margin Making changes to the sales mix will likely cause a change in the breakeven point