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: Skin color is another polygenic trait., Fact2: Most dental variations are polygenic, that is controlled by several genes., Question: Skin color is a trait controlled by what? (A) prokaryotic cells (B) one gene (C) enzymes (D) keratin (E) one's descendants (F) several genes (G) the environment (H) a single gene
[EX A]: F

[EX Q]: Fact1: a seismograph is used for measuring the size of an earthquake, Fact2: Magnitude a measure of earthquake size., Question: Seismographs measure what aspect of earthquakes? (A) Major effects (B) magnitude (C) Otoacoustic (D) power (E) classified (F) specialized (G) lifespan (H) their speed
[EX A]: B

[EX Q]: Fact1: magnetism can cause objects to repel each other, Fact2: Magnetism A compass works on the principle of magnetism and points to the North Magnetic Pole., Question: A compass works on the principle of the objects ability what each other (A) energy (B) mix (C) weld (D) moves (E) Sight (F) wrap (G) neurons (H) repel
[EX A]:
H