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: astronauts require preserved food for extended flights, Fact2: Most of the Shuttle foods are preserved by dehydration, which saves weight and storage space., Question: astronauts require what food for extended flights? (A) Echinoderm. (B) layers of fat (C) dehydrated (D) fresh (E) hand picked (F) nutrients (G) frozen (H) hydration
[EX A]: C

[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: an egg requires warmth to survive, Fact2: And humans do come from eggs, eggs without shells, they are called ovum., Question: What do some ovum require to survive? (A) sperm (B) Proteins (C) glycogen (D) sugar (E) hormones (F) nutrients (G) warmth (H) food
[EX A]:
G