Given the task definition and input, reply with output. 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: Pregnancy is the carrying of one or more offspring from fertilization until birth., Fact2: Mothers choose to have sex, which leads to pregnancy., Question: To what stage do mothers carry offspring from fertilization to? (A) birth (B) mitosis (C) puberty (D) the Sun (E) A Child (F) adult (G) gametes (H) breasts
A