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: Some parasites live on the surface of their host., Fact2: Leeches are external parasites., Question: What unwanted creature would be found on the surface of a human body using it as a host?  (A) Tapeworm. (B) Leeches. (C) Pesticides (D) animals (E) insects (F) Hookworm (G) bacteria (H) Bracelet.
[EX A]: B

[EX Q]: Fact1: if a thermal conductor is exposed to a source of heat then that conductor may become hot, Fact2: Copper is a great thermal conductor., Question: What becomes hot when exposed to a source of heat? (A) rubber (B) wool (C) an object (D) copper (E) paper (F) sugar (G) the skin (H) our star
[EX A]: D

[EX Q]: Fact1: Corals form large colonies in shallow tropical water., Fact2: Coral is the calcite shell of the coral animal., Question: Animals with _ form large colonies in shallow tropical water (A) calcite shells (B) an organism's body (C) Absorb light (D) biological diversity (E) Leptospirosis (F) produce offspring (G) allow growth (H) to stay warm
[EX A]:
A