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: plasma is formed by electrons separating from atoms in stars, Fact2: Plasma exists inside stars and in interstellar gases., Question: What is formed by electrons separating from interstellar gases? (A) an object (B) Energy. (C) proteins (D) led lights (E) air (F) light (G) plasma (H) dust
[EX A]: G

[EX Q]: Fact1: matter vibrating can cause sound, Fact2: Thus, sound is a wave in air ., Question: what can matter vibrating cause? (A) Pollution (B) energy (C) Relieve pain (D) kinetic energy (E) wave in air (F) Energy. (G) murmur (H) Greenhouse gases
[EX A]: E

[EX Q]: Fact1: microorganisms cause food to spoil, Fact2: Food poisoning occurs when spoiled food is eaten., Question: What causes food poisoning? (A) Pesticides (B) Not eating (C) headache (D) microorganisms (E) one celled organisms (F) harmful substances (G) influenza (H) sleeping
[EX A]:
D