Astronauts, in Satellites Orbiting Earth, Feel Weightless

Multiple Choice

Astronauts, in satellites orbiting Earth, feel weightless. Are they really weightless?

A) Yes, because the centrifugal force due to their circular motion balances the force of gravity.
B) Yes, because they are not in Earth's gravitational field.
C) Yes, because they are "falling" around Earth.
D) No, because the gravitational force is pulling downward on them.
E) No, because the centrifugal force is pulling outward on them.