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: bacteria can cause people to become ill, Fact2: People frequently die of illnesses ., Question: What can cause people to die? (A) viruses (B) Dehydration (C) stars (D) smallpox (E) bacteria (F) clouds (G) flooding (H) Saturn
Example Output: E

Example Input: Fact1: decomposition increases amount of organic matter in soil, Fact2: Fungi are involved in decomposition, as well., Question: What can help increase the amount of organic matter in soil?  (A) Fungi (B) mussels (C) pine (D) worms (E) animals (F) Enzymes (G) solutes (H) trees
Example Output: A

Example Input: Fact1: Hydrogen bonds cause water to expand when it freezes., Fact2: Water is made up of H2O molecules., Question: what does hydrogen bonds cause to expand when it freezes? (A) oxygen (B) atomic bombs (C) rain (D) NaCl (E) H20 (F) lake (G) hydrogen (H) h2o
Example Output:
H