Imagine that we stand on any ordinary seaside pier, ... ...

We know from experience that if we look directly at the sun, we will see red light near the sun. This observation is supported by the passage for which one of the following reasons?
(A) It seems reasonable to assume that red light would surround the sun because the sun is basically a large fireball.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Reading D: Extra RC Practice 2