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: Reproduction is the process by which living things give rise to offspring., Fact2: Human offspring are completely immobile., Question: what creates a completely immobile human? (A) burning coal (B) birthdays (C) lungs (D) tectonic plates (E) sports (F) reproduction (G) our nearest star (H) fossil fuels
A:
F