Detailed Instructions: 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").
Q: Fact1: Sperm had to swim from male to female reproductive organs for fertilization., Fact2: And slow sperm is one of the leading causes of male infertility ., Question: what are some sperm? (A) live (B) seeds (C) humans (D) slow (E) H 2 O (F) koalas (G) Loose (H) eggs
A:
D