You will be given a definition of a task first, then some input of the task.
In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Fact1: a planet rotating causes cycles of day and night on that planet, Fact2: Mars has day and night for the same reasons that Earth has day and night., Question: Mars is known to (A) have no polar regions (B) rotate (C) migrate (D) cold (E) have areas that are always in sunlight (F) have running water (G) Rise (H) expand
Output:
B