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: Tunicates reproduce sexually., Fact2: Sea squirts are the best known tunicates., Question: what reproduces sexually? (A) orchids (B) mountains (C) viruses (D) humans (E) sea squirts (F) Most plants (G) h2o (H) insects
E

Fact1: a rainbow is formed by refraction of light by separating light into all different colors, Fact2: Water vapor bends the light., Question: Rainbows are formed via  (A) sunlight (B) streams (C) photons (D) water vapor (E) water cycles (F) water tables (G) just light (H) condensation

D