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: 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
Example Output: D

Example Input: Fact1: extreme heat and pressure change rock into metamorphic rock, Fact2: Marble is a form of metamorphic rock., Question: What is formed from extreme heat and pressure? (A) glass (B) marble (C) crust (D) soils (E) coal (F) sugar (G) calcite (H) arteries
Example Output: B

Example Input: Fact1: Antigens are molecules that the immune system recognizes as foreign to the body., Fact2: Bodies are physical entities., Question: What are molecules that the immune system recognizes as foreign to the physical entity? (A) bacteria (B) proteins (C) antibodies (D) Allergies (E) negative (F) immunities (G) parasites (H) antigens
Example Output:
H