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: Plasma cells are activated B cells that secrete antibodies., Fact2: Antibodies are produced by plasma cells., Question: antibodies are produced by activated B cells that do what? (A) Animal survival (B) killing insects (C) interact (D) secrete them (E) migrate (F) reproduce (G) competition (H) Allergies
[EX A]: D

[EX Q]: Fact1: hurricanes convert heat energy into mechanical energy, Fact2: Some more recent hurricanes are Hurricane Andrew and Hurricane Fran., Question: What did Andrew and Fran have? (A) support (B) courtship (C) Hail (D) Snow (E) Energy (F) Shoes (G) children (H) food
[EX A]: E

[EX Q]: Fact1: Birds evolved from a group of bipedal dinosaurs called theropods., Fact2: Bird A bird is an animal with feathers., Question: a what with feathers evolved from theropods? (A) alpacas (B) long tail (C) plant (D) animal (E) protected (F) tree (G) dinosaur bones (H) ducks
[EX A]:
D