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: hydropower requires damming a river, Fact2: Hoover Dam, the first dam on the Colorado River below Grand Canyon, was built between 1931 and 1935., Question: Which of these produces hydropower? (A) deuterostomes (B) Wind Turbines (C) power stations (D) Suez Canal (E) trout (F) Old Faithful Geyser (G) Hoover Dam (H) stations
[EX A]: G

[EX Q]: Fact1: Annelids have the amazing capacity to regrow segments that break off., Fact2: Annelids have closed circulatory systems., Question: what kind of circulatory system can some segmented animals have? (A) organ (B) insects (C) made (D) warm (E) three (F) complex (G) closed (H) epidermal
[EX A]: G

[EX Q]: Fact1: a spider web is used to capture food by spiders, Fact2: Spiders inject venom into the body of a captured insect to paralyze it., Question: What do eight legged arachnids do after they catch their prey in a web? (A) Inject venom (B) moving over land (C) scratching it (D) nutritious fluid (E) secreting (F) Communication (G) how they move (H) male gametes
[EX A]:
A