Carla designs a new two-player game. In this game, each player rolls a different six-sided number cube. Cube A has four faces labeled with a 5 and two faces labeled with a 1. Cube B has four faces Labeled with a 3 and two faces labeled with a 7. For each number cube, each face is equally likely to land face up. The first player selects one number cube and rolls it, while the second player rolls the other number cube. The winner of the game is the player whose cube shows the higher number face up.