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: keeping food cold is used for keeping food fresh, Fact2: A refrigerator that keeps food cold., Question: What is a refrigerator used for? (A) Electrical energy (B) A place to hang magnets (C) Cooling your home (D) staying warm (E) A doorstop (F) electricity (G) energy usage (H) Keeping food fresh
[EX A]: H

[EX Q]: Fact1: folding an object causes that object to change shape, Fact2: Origami figures are paper folding art projects., Question: When you do origami, objects change (A) shape (B) adapt (C) texture (D) sound (E) energy (F) weight (G) color (H) motion
[EX A]:
A