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: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins., Fact2: DNA is the genetic material responsible for heredity., Question: The genetic material responsible for heredity contains what? (A) wavelengths and photons (B) instructions for proteins (C) characteristics (D) pre-assembled proteins (E) organelles (F) Chemical energy (G) A compound that donates proton (H) blood
[A]: B

[Q]: Fact1: Viruses cause many human diseases., Fact2: Some smallpox viruses are maintained in laboratories., Question: What can smallpox cause? (A) contamination (B) harmful substances (C) vaccines (D) photosynthesis (E) extinction (F) cellular respiration (G) Destroy crops (H) human disease
[A]: H

[Q]: Fact1: Muscle contraction occurs when muscle fibers get shorter., Fact2: Contraction of the muscle straightens the leg., Question: What happens to your leg when muscle fibers shorten? (A) they bend (B) It decreases (C) It straightens (D) permineralization (E) It expands (F) Damages them (G) Localized damage (H) Dehydration
[A]:
C