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: the emission of sulfur dioxide causes acid rain, Fact2: The sulfur dioxide is converted into sulfuric acid., Question: what causes acid rain? (A) gases (B) rainfall (C) Pollution (D) fossil fuels (E) emissions (F) vehicles (G) burning (H) wind
[A]: E


[Q]: Fact1: a scale is used for measuring weight, Fact2: All weight is in pounds., Question: what is a scale used for measuring? (A) waves (B) hardness (C) SI units (D) measures (E) intensity (F) fat (G) strength (H) pounds
[A]: H


[Q]: Fact1: Plants live just about everywhere on Earth., Fact2: Earth is our planet., Question: plants live just about everywhere where? (A) body water (B) outer space (C) Most plants (D) Mars (E) our planet (F) trees (G) mouth of rivers (H) seasons
[A]:
E