A.) what problems does one have comparing companies in utility, fast food, software, and motors on the basis of their ratios

b.) why might the current and quick ratios for the electric utility and the fast food stock be so much lower than the same ratios in other companies

c.) why might it be all right for the electric utility to carry a large amount of debt but not the software company?

D.) why wouldn't investors invest all their money in software companies instead of less profitable companies (focus on risk and return)