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.
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Question: Category: GOVERNMENT 
Clue: Under Medicare most Americans this age & over pay a 15% surtax to cover catastrophic illness

Answer: 65


Question: Category: "R"ITERS 
Clue: This author of the hitchhiking novel "Even Cowgirls Get the Blues" once hitchhiked across the U.S.

Answer: tom robbins


Question: Category: BACK TO BUSINESS 
Clue: No-contract & pay as you go plans are selling points of this cell phone company started by Sir Richard Branson

Answer:
virgin mobile