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: Sperm had to swim from male to female reproductive organs for fertilization., Fact2: If fertilization occurs, the fertilized eggs are now described as pre-embryos or zygotes., Question: Sperm had to swim from what to what reproductive organs for zygotes to occur. (A) barnacles (B) male to female (C) animals (D) ocean water (E) male to male (F) mouth of rivers (G) female to male (H) female to female
B