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: tidal energy can be used to produce electricity, Fact2: Tidal energy schemes capture water at high tide and release it at low tide., Question: What can be produced by capturing water at high tide? (A) more fish (B) clearer water (C) mussels (D) warm water (E) an image (F) electricity (G) a delta (H) watershred
Example Output: F

Example Input: Fact1: when a body of water receives more water than it can hold , a flood occurs, Fact2: Lakes are large bodies of inland water., Question: When does a flood occur in a lake? (A) during rain-less periods (B) at or near the margins (C) after a drought (D) Decreased precipitation (E) after too much water received (F) after not enough water (G) near the shoreline (H) the wearing away of rock
Example Output: E

Example Input: Fact1: fluoride decreases tooth decay, Fact2: Tooth decay is a destruction of the tooth enamel., Question: What does fluoride do? (A) reduce acidity of food (B) stop mouth pain (C) Extensive bone growth (D) make tooth enamel grow (E) protect eyes in the lab (F) It's inherited from genes (G) gas spreads in the air (H) decrease the destruction of tooth enamel
Example Output:
H