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: 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: seeing requires light, Fact2: Vision is our ability to see., Question: What is required for vision? (A) light (B) goggles (C) food (D) smell (E) hormones (F) Protein (G) color (H) hue
[A]: A

[Q]: Fact1: Skin color is a polygenic trait., Fact2: Polygenic inheritance occurs when one trait is governed by two or more sets of alleles., Question: What determines skin color? (A) Preference (B) Two or more sets of alleles (C) specialized cells (D) single cell microorganisms (E) Location of birth (F) antigens that cause allergy (G) Only one allele (H) tissue made of chondrocytes
[A]:
B