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").
Input: Fact1: Most invertebrates have a more complex nervous system., Fact2: Invertebrates are animals without a backbone., Question: Most animals without a backbone have what? (A) epidermis and dermis (B) Leptospirosis (C) Veins and arteries. (D) death and devastation (E) scarce resources (F) barks and snarls (G) decreases its bodily water (H) Complex nervous systems
Output:
H