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: Aging occurs as cells lose their ability to divide., Fact2: Death is attributed to the infirmities of old age., Question: What occurs as cells lose their ability to divide? (A) illness (B) Winter (C) disease (D) death (E) youth (F) die (G) black holes (H) cell growth
Example Output: D

Example Input: Fact1: temperature changing can cause phase changes, Fact2: Melting is the change of phase from a solid to a liquid., Question: What can cause melting? (A) Changing pressure (B) Heat energy (C) Water expanding (D) Evaporation (E) converting electricity to heat (F) Increase in mass (G) Temperature changing (H) Chemical reaction
Example Output:
G