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: telephones are used for communication by two people by transmitting sound, Fact2: Cell phones are, bottom line, radios with a connection to a telephone company., Question: What are used for two people for communication with sound? (A) cell phones (B) messengers (C) energy (D) megaphones (E) A Greek letter (F) flashlights (G) gramophones (H) electricity

Ex Output:
A


Ex Input:
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 Output:
C


Ex Input:
Fact1: howling is used to warn other wolves by wolves, Fact2: And somewhere a beagle howls a most pitiful sound., Question: How do wolves warn other wolves? (A) humans (B) talking (C) sound (D) distraction (E) paper (F) shaking (G) animals (H) to hear

Ex Output:

C