Kirk is helping his grandparents set up their new portable music players. His grandmother, Maude, has 1 jazz album, 2 country-western albums, and 5 heavy metal albums. Kirk's grandfather, Claude, has 3 classical music albums, 2 rap albums, and 7 heavy metal albums.

If Kirk's grandparents' portable music players are on random shuffle mode, who has the greater chance of listening to a heavy metal album? Explain how you know.