Who developed the first personal computer spreadsheet package called Visicalc?

The correct answer is: D. Both (B) and (C)

Dan Bricklin and Bob Frankston developed the first personal computer spreadsheet package called VisiCalc. It was released in 1979 for the Apple II computer. VisiCalc was a revolutionary program that made it possible for people to use computers to perform financial analysis. It was one of the first software programs to be widely adopted by businesses, and it is credited with helping to popularize the personal computer.

Niklaus Wirth is a Swiss computer scientist who is best known for developing the programming language Pascal. He did not develop VisiCalc.

E. None of the above is also an incorrect answer.