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: an egg requires warmth to survive, Fact2: Inside the egg, the developing rattlesnake is nourished by the yolk of the egg., Question: a developing rattlesnake requires what to survive (A) warmth (B) companionship (C) nutrients (D) shade (E) desert (F) food (G) energy (H) air
Example Output: A

Example Input: Fact1: a graduated cylinder is used to measure volume of a liquid, Fact2: Volume Volume is a measure of how much space a space figure takes up., Question: What is used to measure how much space a liquid takes up? (A) aerobic capacity (B) a graduated student (C) Water expanding (D) a graduated cylinder (E) body water (F) a scale (G) a granulated cylinder (H) Light passing through water
Example Output: D

Example Input: Fact1: water vapor condensing in clouds causes rain, Fact2: Heavy rain or thunder storms usually cause flash floods., Question: Water vapor condensing in clouds usually cause what? (A) Pollution (B) Heat energy (C) kinetic energy (D) harmful substances (E) flash floods (F) Greenhouse gases (G) Evaporation (H) Greenhouse gasses
Example Output:
E