Computer Fundamentals - Engineering

Q1:

Which of the following is true concerning personal computers?

A They decrease the demand for mainframe computers

B They have been most successful in the home

C The electronic spreadsheet has been a primary reason for their popularity

D Their future is not so bright owning to the improved cost-performance ratio of minis and mainframes

E None of the above

ANS:C - The electronic spreadsheet has been a primary reason for their popularity

Need some explanation here.