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: Sperm had to swim from male to female reproductive organs for fertilization., Fact2: Endocrinology is the study of organs that produce hormones involved in fertility and reproduction., Question: What swim from organs that produce hormones for fertilization? (A) sperm (B) toads (C) embryos (D) blood (E) humans (F) eggs (G) seeds (H) ovaries
Output:
A