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: pollutants have a negative impact on the environment, Fact2: Carbon dioxide is a pollutant., Question: What affects the environment negatively? (A) sunlight (B) normal weather patterns (C) carbon dioxide (D) cigarettes (E) positivity (F) Smoking (G) harmful substances (H) fossil fuels
answer:
C

question:
Fact1: thick fur can be used for keeping warm, Fact2: When the body is warm, heat production is minimized., Question: thick fur can be used for minimizing what? (A) heat energy (B) heat production (C) scattered light (D) energy usage (E) freezer burn (F) movie production (G) fur production (H) Temperature
answer:
B

question:
Fact1: HIV infects and destroys helper T cells., Fact2: T-helper cells are lymphocytes., Question: what does HIV infect and destroy? (A) organs (B) critical organs (C) eye sight (D) mammals (E) humans (F) gravity (G) lymphocytes (H) AIDS
answer:
G