If You Were Standing on Pluto, How Often Would You

If you were standing on Pluto, how often would you see the satellite Charon rise above your horizon each day?

A) You would see Charon rise once every 2 days because Charon orbits in the same direction as Pluto's rotation but more slowly.
B) You would see Charon rise twice in each 6-hour day because Charon is in a retrograde orbit.
C) You would see Charon rise once in each 6-hour day as Pluto rotates on its axis.
D) Never; Charon is a synchronous satellite like the communication satellites that are in orbit around Earth.