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: 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
[A]: H


[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: Most ecosystems get energy from sunlight., Fact2: Lakes and rivers are extremely complex ecosystems., Question: Where do lakes get energy from? (A) a delta (B) water (C) petroleum (D) sun's heat (E) gasoline (F) Evaporation (G) sunlight (H) heat
[A]:
G