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: Why would a species camouflage as a dangerous animal? (A) to mate (B) to avoid crocodiles (C) to catch prey (D) to  build nests
Example Output: B

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: Owls spend their nights (A) tending to their homes (B) sleeping in hollow logs (C) scanning their territory for field mice (D) hanging out with other owls
Example Output:
C