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: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins., Fact2: DNA acts as the store of genetic information., Question: What does DNA store? (A) information (B) Energy. (C) Chemical energy (D) voltage (E) calories (F) water (G) Energy (H) food
Example Output: A

Example Input: Fact1: lungs are used for breathing air by land animals, Fact2: Elephants are the largest animals on land., Question: What uses lungs for breathing air? (A) rocks (B) some mammals (C) Frogs (D) monotremes (E) humans (F) bacteria (G) elephants (H) oak trees
Example Output: G

Example Input: Fact1: being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time, Fact2: Fens form non-acidic peat., Question: being burried under soil and mud changes how what forms? (A) cacti (B) deltas (C) fens (D) potash (E) bamboo (F) rivers (G) roots (H) mildew
Example Output:
C