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: Most amphibians breathe with gills as larvae and with lungs as adults., Fact2: All frogs are amphibians., Question: What do frogs breathe with when they are adults? (A) skin (B) fins (C) lungs (D) oxygen (E) gills (F) air (G) Energy (H) Gases
[EX A]: C

[EX Q]: Fact1: Corals form large colonies in shallow tropical water., Fact2: Corals are tiny flower-like animals that live in colonies., Question: Where do flower-like animals live? (A) Hot waters (B) Cold waters (C) Chlorophyll (D) loose soil (E) Shallow waters (F) our planet (G) the environment (H) Deep waters
[EX A]: E

[EX Q]: Fact1: Lung cancer is most often caused by exposure to tobacco smoke., Fact2: Lung cancer for most is the consequence of smoking., Question: What is lung cancer a consequence of? (A) candy cigarettes (B) harmful substances (C) Greenhouse gases (D) malnutrition (E) water vapors (F) metabolic reaction (G) tobacco fumes (H) Pesticides
[EX A]:
G