You Are in a Ship That Orbits a Black Hole

You are in a ship that orbits a black hole at a large distance and have a clock that flashes light every second. You throw the clock toward the black hole and record the time when you see each flash of light. What do your records show?

A) The time between flashes stays the same until the clock passes the event horizon.
B) The time between flashes decreases then speeds up after the clock passes the event horizon.
C) The time between flashes increases as the clock approaches the event horizon.
D) The time between flashes decreases as the clock approaches the event horizon.