One Experiment That Informs Us That Gravity Bends Lightbeams Is

One experiment that informs us that gravity bends lightbeams is

A) laboratory experiments in which laser beams pass by massive amounts of iron.
B) the bending of starlight as it nears Earth.
C) the observed bending of light from stars as the light passes the sun.
D) the observed bending of sunlight in Earth's gravitational field.
E) experiments in which laser beams are shined onto the surface of the moon, and their bending is measured.