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").

Fact1: Mollusks have a circulatory system with one or two hearts that pump blood., Fact2: An abalone is a shellfish or mollusk., Question: What has a circulatory system with one or two hearts that pump blood? (A) a fish (B) sharks (C) abalone (D) elephants (E) humans (F) crocodiles (G) giraffes (H) fur seals
C

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
F

Fact1: weathering means breaking down rocks from larger whole into smaller pieces by weather, Fact2: Massive boulders and tiny rocks influence the sound and path of water., Question: What means breaking down boulders by weather? (A) vehicles (B) weathering (C) erosion (D) mechanical (E) flooding (F) earthquake (G) hurricanes (H) tremors

B