Amateur Astronomer: Once the sun sets, it will get colder ... ...

If the amateur astronomer's statements are true, which of the following can be concluded?
(A) Some of the other planets in our solar system may be visible, and it is possible that the moon is visible as well, but the sun has yet to set.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Exercise Set 4: Intro to Connectives