Which of the following statement is right according to this article？A.The PC era followe

Which of the following statement is right according to this article？

A.The PC era followed pretty much the same pattern.

B.This is not a proven formula for all manner of grand adventures and misadventures.

C.The history of the computer business is that its market leaders are both fabulously rich and highly ambitious.

D.Perhaps one of the reasons IBM was tempted to look upwards was because, while it had vast amounts of cash, it faced serious legal constraints in many of its core markets.