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: Evolution occurs in response to a change in the environment., Fact2: Animals react instinctively to changes in their environment., Question: What occurs in animals as they respond to changes in their habitat? (A) starvation (B) evolution (C) arousal (D) relocation (E) resistance (F) dependency (G) Leptospirosis (H) Movement
[EX A]: B

[EX Q]: Fact1: Lions live in social groups called prides., Fact2: Lions live in Africa., Question: where are there social groups called prides? (A) under the sea (B) outer space (C) complex (D) protected (E) arctic (F) fur seals (G) Summer (H) africa
[EX A]: H

[EX Q]: Fact1: the emission of sulfur dioxide causes acid rain, Fact2: Sulfur in the coal becomes sulfur dioxide when burned., Question: Acid rain can be a result of: (A) burning (B) citric acid (C) flow of electrons (D) fashion (E) acid wash (F) chemical changes (G) burning coal (H) Pollution
[EX A]:
G