instruction:
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").
question:
Fact1: glass cause refraction of light, Fact2: Refraction Refraction is the bending of light rays., Question: Glass causes the _ of light (A) intensification (B) bending (C) photons (D) a wave (E) Pollution (F) blocking (G) heat (H) amplification
answer:
B

question:
Fact1: Air pollution harms the respiratory and circulatory systems., Fact2: Cars are a significant source of air pollution., Question: What harms the respiratory and circulatory systems? (A) oil (B) rain (C) sulfur (D) cars (E) tires (F) coal (G) tar (H) bicycles
answer:
D

question:
Fact1: Neurons are the structural and functional units of the nervous system., Fact2: Alcohol depresses the nervous system., Question: Alcohol depresses (A) nerves (B) alveoli (C) emissions (D) thirst (E) neurons (F) humans (G) lungs (H) Decibels
answer:
E