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.

Category: ARTISTS 
Clue: At a May 1995 auction, a painting by her sold for $3.2 million, barely topping one by her husband
frida kahlo

Category: THE SOLAR SYSTEM 
Clue: The 2 planets in our solar system that have atmospheres made up mostly of carbon dioxide
venus & mars

Category: LITERATURE 
Clue: The next-to-last chapter of this novel is entitled "The Knitting Done"

a tale of two cities