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 Q]: Fact1: seeing requires light, Fact2: Vision is our ability to see., Question: What is required for vision? (A) light (B) goggles (C) food (D) smell (E) hormones (F) Protein (G) color (H) hue
[EX A]: A

[EX Q]: Fact1: electricity is used as an energy source by electrical devices, Fact2: Electrical fields result from electrical devices and televisions., Question: What is used as an energy source by television? (A) electricity (B) light (C) our nearest star (D) air (E) energy (F) satellites (G) photons (H) rocks
[EX A]: A

[EX Q]: Fact1: friction causes the speed of an object to decrease, Fact2: Friction is a Force that opposes motion., Question: If a force that opposes motion is applied to an object, what will happen to its speed? (A) Plant growth is reduced (B) It will decrease (C) It will reach nano-speed (D) It will stay the same (E) kinetic energy (F) It will increase (G) Under 32 degrees (H) supersonic
[EX A]:
B