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: Glucose is used for energy by the cells of most organisms., Fact2: Glucose, the sugar the body uses for fuel, is stored as glycogen., Question: What is sugar stored as by the body? (A) heat energy (B) sun's heat (C) A drug. (D) A kernel (E) energy (F) glycogen (G) lmestone (H) Hemoglobin
Example Output: F

Example Input: Fact1: heating salt water causes the water to evaporate while the salt remains, Fact2: Salt is produced by the evaporation of sea water., Question: how is salt produced? (A) flow of electrons (B) solid, liquid, gas (C) chemical messengers (D) Solutions (E) Physical weathering (F) It gets heated up (G) near the shoreline (H) heating water
Example Output: H

Example Input: Fact1: rain causes erosion, Fact2: Rain is also known as precipitation., Question: What causes erosion? (A) rainfall (B) the Moon (C) precipitation (D) vehicles (E) ice wedging (F) Venus (G) Mars (H) mouth of rivers
Example Output:
C