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 Input:
Fact1: fog is formed by water vapor condensing in the air, Fact2: Water vapor rises into the atmosphere., Question: what does the atmosphere do before turning into fog (A) adapt (B) rest (C) Rise (D) fall (E) cooled (F) snow (G) swirl (H) Lift

Ex Output:
C


Ex Input:
Fact1: Playing is one way mammals and other animals learn how to behave., Fact2: Opossums are a type of mammal called marsupials., Question: what plays to learn how to behave? (A) opossums (B) humans (C) people (D) fish (E) exercise (F) ants (G) h2o (H) catabolism

Ex Output:
A


Ex Input:
Fact1: threatening behavior by predators causes a porcupine to extend its quills, Fact2: Similarly, threatening or intimidating behaviors are also forbidden., Question: What defense mechanism does a porcupine use when intimidated? (A) eardrum (B) deadly (C) sound (D) instincts (E) steroids (F) organ (G) quills (H) blastoids

Ex Output:

G