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: Mammals can also generate little bursts of heat by shivering., Fact2: Polar bears are mammals., Question: What can generate little bursts of heat by shivering? (A) alpacas (B) bacteria (C) animals (D) polar bears (E) phytoplankton (F) rabbit (G) viruses (H) humans
Example Output: D

Example Input: Fact1: a plant requires photosynthesis to grow, Fact2: Legumes are typical of that type of plant., Question: what requires photosynthesis to grow? (A) Roundworms (B) clouds (C) Conifers (D) Echinoids (E) humans (F) h2o (G) legumes (H) sugar
Example Output: G

Example Input: Fact1: Amphibians have permeable skin that easily absorbs substances from the environment., Fact2: Amphibians have lungs, but they also breathe through their skin., Question: what type of skin easily absorbs air to breathe through (A) human (B) water vapor (C) mammals (D) scales (E) It expands (F) permeable (G) furry (H) to stay warm
Example Output:
F