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").

Ex Input:
Fact1: Insects may live in large colonies and have complex social behaviors., Fact2: Ants are social insects living in colonies., Question: What type of behavior does an ant have? (A) Randomized (B) Social (C) Solitary (D) dangerous (E) complex (F) Problematic (G) movement (H) kinetic

Ex Output:
B

Ex Input:
Fact1: keeping food cold is used for keeping food fresh, Fact2: A refrigerator that keeps food cold., Question: What is a refrigerator used for? (A) Electrical energy (B) A place to hang magnets (C) Cooling your home (D) staying warm (E) A doorstop (F) electricity (G) energy usage (H) Keeping food fresh

Ex Output:
H

Ex Input:
Fact1: when a metal rusts , that metal becomes orange on the surface, Fact2: Rust stains are the result of oxidation., Question: metal becomes orange on the surface as a result of (A) magnetism (B) friction (C) treatment (D) heating (E) Car accidents (F) oxidation (G) air pollution (H) condesation

Ex Output:
F