Star Abbott and star Costello each have one planet: Planet Bud orbits star Abbott and planet Lou orbits star Costello. Bud takes 2 years to make one orbit, and it orbits at a distance of 6 AU. Lou takes 2 years to make one orbit, and it orbits at a distance of 2 AU.

What does this tell is about the masses of Abbott and Costello? (Hint: Your answer should tell us which one is more massive, and how many times more massive.)

Or is this some sort of trick question?