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: lakes are formed by precipitation and runoff, Fact2: Runoff from precipitation is a natural part of the water cycle., Question: What are some of the steps that forms a lake? (A) decomposition and respiration (B) storing water (C) photosynthesis and solar energy (D) near the shoreline (E) precipitation and run-off (F) perspiration and excretion (G) The area was once underwater (H) At the peak of a mountain
Example Output: E

Example Input: Fact1: Hormones are chemical messengers that control many body functions., Fact2: Growth hormone is in many ways an anti-aging hormone., Question: What controls anti-aging? (A) A computer (B) air (C) chemical messengers (D) ice (E) an electric stove (F) Electrical energy (G) water (H) Chemical energy
Example Output: C

Example Input: Fact1: drought is when amount of precipitation decreases, Fact2: Drought causes famine, which contributes to decentralization and unrest., Question: What can cause famine? (A) Movement of an air mass (B) Effective fertilizers (C) the ground shaking (D) Increased irrigation (E) Crop harvesting (F) Decreased precipitation (G) single-celled organisms (H) forest is destroyed
Example Output:
F