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: a scale is used for measuring weight, Fact2: All weight is in pounds., Question: what is a scale used for measuring? (A) waves (B) hardness (C) SI units (D) measures (E) intensity (F) fat (G) strength (H) pounds

Ex Output:
H


Ex Input:
Fact1: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: Vaccination is Active Acquired Immunity., Question: What results when an immune response to a pathogen produces memory cells? (A) anemia (B) vaccination (C) kill them (D) competition (E) lie detectors (F) rapid expansion (G) killing insects (H) it needs them

Ex Output:
B


Ex Input:
Fact1: Mammals can also generate little bursts of heat by shivering., Fact2: An inability to shiver or react to the cold can contribute to hypothermia., Question: Mammals can also generate little bursts of heat by what? (A) the body's largest organ (B) reacting to the cold (C) flow of electrons (D) looking very cold (E) reacting to the news (F) considering being warm (G) Movement of an air mass (H) with their fur

Ex Output:

B