In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Example Input: In the 60's people watched on TV while for the first time people walked on (A) a high rooftop in a major city (B) a satellite without much air in our solar system (C) the edge of a cliff in the mountains (D) a beach in Brazil
Example Output: B

Example Input: A lone fox is searching for its next meal in a meadow that used to be bountiful with food. This season, though, rabbits have all been eaten up and the field is dry and barren. The fox may (A) fly (B) speak (C) starve (D) float
Example Output: C

Example Input: If you eat food that lots of microorganisms have been on, you could get (A) float (B) Fly (C) grow a beak (D) get an ailment
Example Output:
D