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").

Example Input: Fact1: Ants communicate with chemicals called pheromones., Fact2: Ants are of extreme importance in the insect world., Question: How do some insects communicate? (A) sound (B) sensory neurons (C) Decibels (D) electronic waves (E) progesterone (F) Vibrates (G) pheromones (H) radio waves
Example Output: G

Example Input: Fact1: Oncogenes promote the division of cells with damaged DNA., Fact2: Oncogenes are genes that promote division., Question: genes that promote division do so with what? (A) Most plants (B) damaged DNA (C) peachleaf willow (D) Plants growth (E) Animal survival (F) Chemical energy (G) Change colors (H) Microscope
Example Output: B

Example Input: Fact1: breathing is when a gill converts from oxygen in water into oxygen in blood, Fact2: Sharks breathe using gills., Question: What do sharks use to convert oxygen? (A) gills (B) skin (C) blood (D) fins (E) Enzymes (F) mouth (G) tail (H) fibers
Example Output:
A