In the geocentic model, both Venus and the Sun orbit the Earth. To explain retrograde motion, Venus orbits in an epicycle. To explain the fact that Venus is only seen near sunrise and sunset, the orbit of Venus is "tied" to the orbit of the Sun. In this model, if you looked at Venus through a telescope (so you could see the disk), you would expect to see:
    A ) always a full Venus
    B) always a half Venus
    C) either a crescent or new Venus
    D) all different phases at different times

When called for, hold up the letter of your choice.