5. The accountant's approach to costvolume profit analysis has been criticized in that. among other matters, it does not deal with the following: (a) situations where sales volume differs radically from production volume; (b) situations where the sales revenue and the total cost functions are markedly non-linear; (c) changes in product mix; and (d) risk and uncertainty. Explain these obiections to the accountant's conventional costwvolume-profit model and suggest how they can be overcome or ameliorated