Ren Loves to Go to the Movies, and He Just

Ren loves to go to the movies, and he just learned that he can buy a ticket at a discounted price using his student ID. Ren now sees movies at the theater even more frequently. The change in Ren's behavior would be shown graphically by a:

A) rightward shift in his demand curve.
B) leftward shift in his demand curve.
C) movement down along his demand curve.
D) movement up along his demand curve.