You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[Q]: Category: THE COMPUTER AGE 
Clue: Dan Bricklin developed VISICALC, the first of these programs, similar to an accounting ledger
[A]: spreadsheet


[Q]: Category: PARTICLE PHYSICS 
Clue: To get an element's mass number, add its protons & these
[A]: neutrons


[Q]: Category: CHEM LAB 
Clue: Glenn Seaborg, a discoverer of this deadly element, said it was given the symbol Pu "as a joke"
[A]:
plutonium