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: when the seasons change from the summer to the fall , the amount of daylight will decrease, Fact2: Daylight, sunlight, is necessary to it., Question: When the seasons change from the summer to the fall, the amount of what will decrease? (A) air (B) matter (C) Energy. (D) Solar energy (E) Light (F) sunlight (G) energy (H) planets
Example Output: F

Example Input: Fact1: heating salt water causes the water to evaporate while the salt remains, Fact2: Flash evaporators are used to make fresh water from salt water., Question: Doing what to salt water causes the water to become fresh water? (A) watershred (B) freezing (C) Regrows it (D) migrate (E) pouring (F) heating (G) cooling (H) erosion
Example Output: F

Example Input: Fact1: Cartilage is a tough tissue that contains a protein called collagen., Fact2: Sharks have a cartilage skeleton., Question: Sharks have as skeleton that contains (A) elastin (B) Epidermis (C) calcium (D) fur and fat (E) marrow (F) strength (G) all matter (H) collagen
Example Output:
H