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: Populations of viruses do not grow through cell division because they are not cells., Fact2: Prokaryotes multiply by simple cell division, forming clones or exact copies of themselves., Question: What are viruses not? (A) self-copies (B) an object (C) HIV (D) humans (E) infectious (F) homogenous (G) dangerous (H) prokaryotes
[EX A]: H

[EX Q]: Fact1: lightning can cause a forest fire, Fact2: Forest fires are bad for the environment., Question: Lightning can be bad for what? (A) the environment (B) rainstorms (C) destruction (D) visibility (E) thunder (F) the sun (G) The weather. (H) transportation
[EX A]: A

[EX Q]: Fact1: hearing is used for sensing sound by animals, Fact2: By nature, dogs are pack animals., Question: How do dogs sense sound? (A) Heart rate (B) observe it (C) sight (D) hormones (E) waves (F) touch (G) hearing (H) smell
[EX A]:
G