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: melting means changing from a solid into a liquid by adding heat energy, Fact2: Ice is the solid form of water., Question: What changes ice to water by adding heat energy? (A) mussels (B) melting (C) freezing (D) fertilization (E) storms (F) boiling (G) engines (H) condensation
Example Output: B

Example Input: Fact1: Invertebrates are animals that lack a vertebral column, or backbone., Fact2: Jellyfish and insects are invertebrates., Question: what lacks a backbone? (A) fossil fuels (B) Chlorophyll (C) humans (D) Leptospirosis (E) fungi (F) spine (G) jellyfish (H) animals
Example Output:
G