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: having food has a positive impact on an organism 's health, Fact2: Birds and animals eat such food ., Question: What generally has a positive impact on an organism's health? (A) stay warm (B) sex with multiple partners (C) smoking (D) exercise (E) nutrients (F) eating (G) Cooking (H) fasting
[A]: F

[Q]: Fact1: nuclear reactions in stars causes stars to produce light, Fact2: And, of course, the Sun is a star., Question: What in the sun causes the sun to produce light? (A) energy of moving objects (B) hydrogen and oxygen (C) heat energy (D) water (E) solar rays (F) rotation (G) nuclear reactions (H) kinetic energy
[A]: G

[Q]: Fact1: Humans have collected and grown mushrooms for food for thousands of years., Fact2: Porcini mushrooms are earthy, musky, sexy food., Question: what have humans collected and grown for thousands of years? (A) computers (B) h2o (C) orchids (D) stamps (E) seeds (F) trees (G) ferns (H) porcinis
[A]:
H