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: a flashlight requires a source of electricity to produce light, Fact2: Flashlights can help children see better., Question: Children see better with a source of electricity to do what? (A) focusing a lens (B) staying warm (C) survival (D) reproduce (E) produce light (F) remove electricity (G) produce darkness (H) remove light
[A]: E

[Q]: Fact1: Mollusks reproduce sexually., Fact2: Mollusks are the dominant invertebrate., Question: what reproduces sexually? (A) A compound that donates proton (B) spread flower seeds (C) They have webbed feet (D) Plant reproduction (E) By wind and rain (F) passenger pigeons (G) the dominant invertebrate (H) Something found in San Francisco
[A]: G

[Q]: Fact1: a rubber band snapping causes the particles in the rubber band to vibrate, Fact2: Of course, pianos and other instruments produce damped, forced vibrations., Question: A rubber band snapping acts like what? (A) electromagnetic energy (B) wavelengths and photons (C) Relieve pain (D) electrically (E) Electrical energy (F) flow of electrons (G) rays or beams (H) A piano making sound
[A]:
H