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: energy is used for heating a building by a heating system, Fact2: Faculty offices are also in the building., Question: What contains energy to raise the temperture of an office? (A) chemical messengers (B) peachleaf willow (C) deoxyribonucleic acid (D) cooling system (E) swimming pool (F) heating system (G) gym (H) organic molecules

Ex Output:
F

Ex Input:
Fact1: Fertilization takes place inside the female organism., Fact2: Fatty tissue in a woman's body produces female hormones., Question: Where does human fertilization naturally take place? (A) hard shelled egg (B) petri dish (C) bushes (D) man (E) Earth (F) eggs (G) woman (H) orchids

Ex Output:
G

Ex Input:
Fact1: Molecules of DNA are encoded with instructions that tell cells what to do., Fact2: Genes are segments of DNA molecules., Question: what are encoded with instructions that tell cells what to do? (A) heat or cold (B) sensory neurons (C) a delta (D) gene segments (E) A Greek letter (F) to move people (G) lie detectors (H) Electrical energy

Ex Output:
D