a)One of the most challenging decisions a company can confront is whether to diversify: the rewards and risks can be extraordinary. Success stories aboundthink of General Electric, Disney, and 3Mbut so do stories of such infamous and costly failures as Quaker Oats' entry into the fruit juice business with Snapple, and RCA's forays into computers, carpets, and rental cars.

Mark Cuban has a more blunt view of diversification: "Diversification is for idiots."

Warren Buffett had this to say about diversification: "Diversification is protection against ignorance. It makes little sense if you know what you are doing."

Charlie Munger has this to say: "The whole idea of diversification when you're looking for excellence is totally ridiculous. It doesn't work. It gives you an impossible task."

Do you agree with the above statements? Please explain your rationale