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