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: cold fronts cause thunderstorms as they pass by, Fact2: If cold air replaces warm air, it is called a cold front., Question: What does cold air replacing warm air cause? (A) Greenhouse gases (B) Pollution (C) Dehydration (D) thunderstorms (E) steady barometer readings (F) hypothyroidism (G) constant air pressure (H) stagnant air temperature
Example Output: D

Example Input: Fact1: Behaviors that improve fitness increase through natural selection., Fact2: Fitness traits relate to an animal s ability to survive and reproduce., Question: behaviors increase through what that improve traits of animal's ability to survive (A) competition (B) hunting (C) biological diversity (D) the environment (E) eating (F) produce offspring (G) natural selection (H) grooming
Example Output: G

Example Input: Fact1: Chromoplasts make and store pigments., Fact2: Photosynthesis Pigments Pigments are substances that absorb visible light., Question: What are substances that absorb visible light? (A) chromatic (B) chromoplasts (C) trucks and cars (D) sea anemones (E) chromatin (F) chromatid (G) black widows (H) prokaryotic cells
Example Output:
B