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: the mass of a planet causes the pull of gravity on that planet, Fact2: Well, weight is the force on a object caused by gravity trying to pull the object down., Question: The mass of a planet causes the what? (A) harmful substances (B) global warming (C) weight of objects (D) It gets heated up (E) heat energy (F) to move people (G) kinetic energy (H) flow of electrons
[EX A]: C

[EX Q]: Fact1: if an animal lives under ground then that animal will be protected from a wild fire, Fact2: Many squirrels live in burrows under the ground instead of in the trees., Question: Many squirrels are protected from what by their burrows (A) disease (B) wild fire (C) A virus (D) Wet weather (E) sun's heat (F) cold air (G) Winter (H) deforestation
[EX A]: B

[EX Q]: Fact1: Echinoderms lack respiratory and excretory systems., Fact2: Starfish and sea urchins are also echinoderms., Question: what lack respiratory and excretory systems? (A) fish (B) graptolites (C) starfish (D) waste (E) humans (F) barnacles (G) insects (H) ferns
[EX A]:
C