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").

Example Input: Fact1: Cancer cells divide more often than normal cells, and grow out of control., Fact2: Cancer cells are abnormal and divide without control or order., Question: what kind of cells are abnormal? (A) nuclear (B) kidney (C) cell wall (D) dangerous (E) white (F) parasites (G) negative (H) cancer
Example Output: H

Example Input: Fact1: webbed feet are used for moving faster through water by aquatic animals, Fact2: Animals move around, seeking their prey., Question: What do webbed feet help aquatic animals do? (A) rapid expansion (B) root growth (C) Catch prey (D) support (E) Regrows it (F) squeeze (G) Relieve pain (H) improve
Example Output: C

Example Input: Fact1: a breathing mask is used for keeping harmful particles from entering the respiratory system, Fact2: When mold grows in the house, it can emit particles that travel through the air., Question: What can keep mold from entering the respiratory system? (A) vaccinations (B) layers of fat (C) deep breaths (D) sweating (E) a breathing mask (F) moisture (G) organic molecules (H) hydrogen and oxygen
Example Output:
E