Definition: 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").
Input: Fact1: an animal needs to attract a mate to reproduce, Fact2: Sex is a complicated way for an organism to reproduce itself., Question: What does an animal need to attract a mate for? (A) food (B) sex (C) water (D) nest (E) male (F) transportation (G) eggs (H) life
Output:
B