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: when a metal rusts , that metal becomes orange on the surface, Fact2: Iron rusts in the presence of oxygen and water., Question: Exposure to oxygen and water can cause iron to  (A) decrease strength (B) melt (C) uncontrollable burning (D) thermal expansion (E) turn orange on the surface (F) vibrate (G) Extremes of temperature (H) levitate
[A]: E


[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: Plants release oxygen during the day but not during the night., Fact2: Oxygen from the air is needed by the body in order to live., Question: What do plants do during the day but not during the night? (A) It helps them survive (B) Help the body to live (C) preventing heat transfer (D) by making heat (E) Generating heat (F) converting electricity to heat (G) Release energy (H) adding heat
[A]:
B