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: Wings are part of the exoskeleton and attached to the thorax., Fact2: Insect wings are attached to the dorsal side of their thorax., Question: What side of an insect are wings attached to? (A) white (B) dorsal (C) protected (D) abdomen (E) elytra (F) three (G) strong (H) tail
[EX A]: B

[EX Q]: Fact1: Carbon cycles quickly between organisms and the atmosphere., Fact2: Water, carbon dioxide, and nitrogen are all needed by living things., Question: What is needed by living things? (A) hate (B) sunlight (C) Chemical energy (D) pain (E) love (F) hydration (G) The atmosphere (H) Energy.
[EX A]: G

[EX Q]: Fact1: Wetlands are extremely important biomes., Fact2: Marshes and swamps are wetlands., Question: What are extremely important biomes? (A) important habitats (B) urban city (C) remains of prehistoric life (D) zoos (E) water conservation (F) Most plants (G) manmade aqueducts (H) marshes and swamps
[EX A]:
H