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: if all members of a species cannot produce offspring then that species will likely become extinct, Fact2: Avian species are less likely to become extinct if they are common across large ranges., Question: Avian species are less likely to end up extinct if they what? (A) single-celled organisms (B) important habitats (C) abandon habitats (D) stop reproducing (E) animals with backbones (F) produce offspring (G) population movement (H) destroy offspring
Example Output: F

Example Input: Fact1: if an animal lives under ground then that animal will be protected from a wild fire, Fact2: Many squirrels live in burrows under the ground instead of in the trees., Question: Many squirrels are protected from what by their burrows (A) disease (B) wild fire (C) A virus (D) Wet weather (E) sun's heat (F) cold air (G) Winter (H) deforestation
Example Output: B

Example Input: Fact1: Immunodeficiency occurs when the immune system is not working properly., Fact2: Merchandise didn t work, or was broken., Question: Immunodeficiency occurs when the immune system is what? (A) strong and healthy (B) expelled (C) infected (D) decreases (E) working great (F) broken (G) dangerous (H) easygoing
Example Output:
F