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").

Fact1: a plants require water for survival, Fact2: Water contains hydrogen and oxygen., Question: What do plants require for their survival? (A) Light (B) Proteins (C) Energy. (D) salinity (E) hydrogen (F) nutrients (G) sunlight (H) food
E

Fact1: coal is used for generating heat by burning, Fact2: Coal and lignite are the lithified remains of plants., Question: What are the lithified remains of plants used for? (A) heat production (B) generating heat by burning (C) harvesting crops (D) damming rivers (E) food and shelter (F) heat is produced (G) A transportation fuel (H) planting seeds
B

Fact1: coal is used to produce electricity by burning in coal-fire power stations, Fact2: Electricity is a form of energy., Question: What does burning coal in coal-fired power plants produce? (A) Decibels (B) Fireplaces. (C) engines (D) organisms (E) Aloe plants. (F) Banana plants. (G) Energy. (H) warmth
G