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: a greenhouse is used to protect plants from the cold, Fact2: Plants are very easily raised from seed, sown in a cold greenhouse from February to April., Question: What does a greenhouse protect plants from to help them grow easily? (A) death (B) hotness (C) Winter (D) fronts (E) heat (F) drought (G) rain (H) chill
[A]: H


[Q]: Fact1: matter vibrating can cause sound, Fact2: All matter emits vibrations., Question: What kind of matter can produce sound? (A) sensory neurons (B) all matter (C) an object (D) only liquids (E) mechanical (F) only plasma (G) only solids (H) waves
[A]: B


[Q]: Fact1: soil is formed by rocks eroding, Fact2: Examples of such rock include sandstone and shale ., Question: What forms soil? (A) Earthworms (B) single-celled organisms (C) an external framework (D) space travel (E) most organisms (F) sandstone eroding (G) water freezing (H) ice forming
[A]:
F