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").

Input: Consider Input: Fact1: Air pollution harms the respiratory and circulatory systems., Fact2: Cars are a significant source of air pollution., Question: What harms the respiratory and circulatory systems? (A) oil (B) rain (C) sulfur (D) cars (E) tires (F) coal (G) tar (H) bicycles

Output: D


Input: Consider Input: Fact1: pollutants have a negative impact on the environment, Fact2: Environment and Health Environment and Health All living things depend on their environment., Question: pollutants have a negative impact on all what (A) tractors (B) circulatory systems (C) near the shoreline (D) living things (E) Electrical energy (F) pavement (G) potholes (H) important habitats

Output: D


Input: Consider Input: Fact1: Fertilization occurs when sperm swim to an egg inside an archegonium., Fact2: Each archegonium contains a single egg that is embedded in the prothallus., Question: What happens inside the single egg embedded inside the prothallus  (A) Earth revolving around the sun (B) The area was once underwater (C) gastropod shells (D) it keeps an organism warm (E) remains of prehistoric life (F) fertilization occurs (G) allow growth (H) It helps them survive


Output: F