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: Evolution is a change in the characteristics of living things over time., Fact2: Trees are the largest of living things., Question: Evolution changes the characteristics of what over time? (A) the Moon (B) Man (C) life (D) trees (E) rocks (F) the Sun (G) humans (H) plants
Example Output: D

Example Input: Fact1: Corals form large colonies in shallow tropical water., Fact2: Corals are tiny flower-like animals that live in colonies., Question: Where do flower-like animals live? (A) Hot waters (B) Cold waters (C) Chlorophyll (D) loose soil (E) Shallow waters (F) our planet (G) the environment (H) Deep waters
Example Output: E

Example Input: Fact1: Cartilage is a tough tissue that contains a protein called collagen., Fact2: Cartilage cells, called chondroblasts, make cartilage., Question: Chondroblasts lead to to what? (A) migrate (B) sweating (C) strength (D) cartilage (E) illness (F) anemia (G) allow growth (H) Leptospirosis
Example Output:
D