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: Annelids are worms such as the familiar earthworm., Fact2: An earthworm has five hearts., Question: One example of an annelid has how many hearts? (A) three (B) Five (C) white (D) warm (E) four (F) strong (G) long (H) small
[EX A]: B

[EX Q]: Fact1: building housing developments usually requires replacing animal habitats, Fact2: Habitat destruction is the primary cause of extinction or threat of extinction for all animals., Question: Building housing developments may cause  (A) eruptions (B) colder weather (C) disease (D) erosion (E) extinction (F) mutations (G) Destroy bridges (H) deforestation
[EX A]: E

[EX Q]: Fact1: Specialization occurs when competing species evolve different adaptations., Fact2: Mynah birds are the main competing species for nest holes., Question: What can Mynah birds undergo to compete for nest holes? (A) layers of fat (B) weaponization (C) permineralization (D) specialization (E) personification (F) adding heat (G) Temperature changing (H) bacteria
[EX A]:
D