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: insect bites cause harm to living things, Fact2: Iguanas are a lot like dogs, people and other living things., Question: What can an insect to do cause harm to people? (A) humans (B) Injury (C) Bite an iguana (D) Bite a dog (E) deadly (F) Bite (G) death (H) Bite an insect
[EX A]: F

[EX Q]: Fact1: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: Vaccination is Active Acquired Immunity., Question: What results when an immune response to a pathogen produces memory cells? (A) anemia (B) vaccination (C) kill them (D) competition (E) lie detectors (F) rapid expansion (G) killing insects (H) it needs them
[EX A]: B

[EX Q]: Fact1: poisonous darts are used for defense by sea anemones, Fact2: Sea anemones are close relatives of corals ., Question: what are used for defense by close relatives of coral? (A) chemical messengers (B) microscopic organisms (C) flagella (D) poisonous darts (E) Chemicals (F) coelenterates (G) antibodies (H) lamphreys
[EX A]:
D