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: Cancer is a disease in which cells divide out of control., Fact2: Cancer is also caused by a mutation., Question: What can mutations lead to in which cells divide out of control? (A) Smoking (B) resistance (C) a disease (D) viruses (E) AIDS (F) bacteria (G) Leptospirosis (H) cigarettes
Example Output: C

Example Input: Fact1: Skin color is another polygenic trait., Fact2: Tourette syndrome a polygenic disorder ., Question: what is tourette syndrome? (A) malaria (B) cancer (C) trait (D) fever (E) cell (F) antigen (G) virus (H) Type O
Example Output: C

Example Input: Fact1: a stem is used to store water by some plants, Fact2: Some plants also store water in their trunks and stems., Question: Where do plants store water? (A) watershed (B) Collagen (C) excretory (D) trunks (E) fibrils (F) soil (G) Winter (H) cellulose
Example Output:
D