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: shelter is used for protection by animals against weather, Fact2: Caves or rock overhangs provide shelter., Question: What do animals find protection from when using rock overhangs? (A) sun's heat (B) insects (C) weather (D) erosion (E) rivers (F) bats (G) wind (H) the sun
[EX A]: C

[EX Q]: Fact1: a fire requires oxygen to burn, Fact2: In the vacuum of space, there's no oxygen to burn., Question: Where is fire impossible? (A) evaporation (B) In space (C) A computer (D) uncontrolled (E) Inside a car (F) On television (G) summer end (H) On a mountain
[EX A]: B

[EX Q]: Fact1: plucking a string can cause that string to vibrate, Fact2: When something makes a noise it is vibrating., Question: Plucking a string can cause that string to make what? (A) colors (B) light (C) Energy. (D) a chime (E) flavors (F) sound (G) noise (H) waves
[EX A]:
G