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: Marine species live mainly in shallow coastal waters., Fact2: Killer whales prefer shallow and colder coastal waters., Question: What are killer whales? (A) red and black (B) They have thick fur (C) dangerous (D) sharks (E) deep sea creatures (F) marine species (G) Absorb light (H) animals
[EX A]: F

[EX Q]: Fact1: Wings are part of the exoskeleton and attached to the thorax., Fact2: Insect wings are attached to the dorsal side of their thorax., Question: What side of an insect are wings attached to? (A) white (B) dorsal (C) protected (D) abdomen (E) elytra (F) three (G) strong (H) tail
[EX A]: B

[EX Q]: Fact1: Blood type is important for medical reasons., Fact2: Treatment Treatment of cirrhosis is medical., Question: Blood type is necessary for some: (A) Charlie Chaplin (B) humans (C) saves lives (D) vampires (E) animals (F) tissue (G) treatment (H) Ages 0 to 3
[EX A]:
G