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").

[Q]: Fact1: an animal usually requires a warm body temperature for survival, Fact2: Mammals are also warm-blooded and are covered with hair or fur., Question: What helps maintain body temperature? (A) hats (B) Lift (C) the inside of a refrigerator (D) fur (E) skin (F) arctic winds (G) freezing water (H) hair
[A]: D


[Q]: Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Lung injuries are treated with bronchodilatory treatment., Question: What treatment can be used in treating pneumonia? (A) the respiratory system (B) a breathing mask (C) bronchodilatory treatment (D) aqueous solution (E) immunotherapy (F) radiation therapy (G) immune system (H) chemotherapy
[A]: C


[Q]: Fact1: a airplane is used for moving people across bodies of water, Fact2: Airplanes like Boeing 747 can take off and land on the airport., Question: what is used for moving people across bodies of water? (A) Boeing 747 (B) cars (C) skateboards (D) heat energy (E) engines (F) shoes (G) energy (H) electricity
[A]:
A