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: satellites are used to take images from space, Fact2: Images of Earth taken from space., Question: Images of Earth are taken by (A) satellites (B) light (C) Communication (D) millions (E) radar (F) Plate tectonics (G) moving plates (H) lamphreys
Example Output: A

Example Input: Fact1: Mutualism is a symbiotic relationship in which both species benefit., Fact2: Dogs and humans are symbiotic species., Question: what exists between dogs and humans? (A) mutualism (B) gravity (C) communication (D) antigens (E) several genes (F) space between (G) electrons (H) german shepherd
Example Output: A

Example Input: Fact1: Cancer is a disease in which cells divide out of control., Fact2: After lung cancer, the commonest cancers in Britain are cancers of the breast, bowel and prostate., Question: The most common areas affected by a disease in which cells divide out of control are what and breast (A) kidney (B) skin (C) lung (D) back (E) HIV (F) humans (G) H 2 O (H) pancreas
Example Output:
C