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: Populations of viruses do not grow through cell division because they are not cells., Fact2: Viruses are the cause of many diseases., Question: What aren't diseases caused by? (A) ovaries (B) bacteria (C) A drug. (D) humans (E) cells (F) infection (G) virus (H) cats
Example Output: E

Example Input: Fact1: Carbon may be stored in sedimentary rock for millions of years., Fact2: Limestone is a type of sedimentary rock., Question: What element can be stored in limestone for millions of years? (A) oxygen (B) Energy (C) matter (D) carbon (E) sodium (F) helium (G) rock salt (H) heat
Example Output: D

Example Input: Fact1: Loss of ozone has created an ozone hole over Antarctica., Fact2: Ozone Ozone is a natural component of the atmosphere., Question: a loss of what has created a hole over Antarctica? (A) eruptive products (B) detritus and detrital organism (C) clouds (D) krill and plankton (E) h2o (F) single cell microorganisms (G) natural atmosphere component (H) gravity
Example Output:
G