A boy and his younger sister are at the arcade but they only have enough money for one game of skee ball. If they get to play 9 balls, which of the following best describes how the girl and her brother might share the balls?

The boy gets to play 5 balls.
The younger sister gets to play 5 balls.

The boy gets to play 4 balls.
The younger sister gets to play 5 balls.

The boy gets to play 5 balls.
The younger sister gets to play 6 balls.

The boy gets to play 3 balls.
The younger sister gets to play 4 balls.