Lily and Rose are playing a game. In the game, each player starts with 0 points and the player with the most points at the end wins. Lily gains 5 points two times, loses 12 points, and then gains 3 points. Rose loses 3 points two times, loses 1 point, gains 6 points, and then gains 7 points.

a. Write and evaluate an expression to find Lily's score.

b. Write and evaluate an expression to find Rose's score.

c. Who won the game?