We Can Tell That Some Stars Are Relatively Close to Us

Multiple Choice

We can tell that some stars are relatively close to us in the sky because

A) they appear to move periodically back and forth against the background stars because of Earth's movement around the Sun.
B) they appear to be extremely bright.
C) they are occasionally occulted or eclipsed by our Moon.
D) the light from these stars shows only a very small redshift caused by the universal expansion of the universe.