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: A learned characteristic could be (A) Eye color (B) a cartwheel (C) freckles (D) Hair color
Example Output: B

Example Input: Lucy left a pan half full of water in the sun and it dried up in one afternoon. (A) the pan was in the cool shade (B) a squirrel dumped the water of its head to cool off (C) butterflies drank it all (D) it was the summertime
Example Output: D

Example Input: A hermit crab may find good protection from elements in (A) a mountain lion (B) a sky color (C) a stone configuration (D) a mouse carcass
Example Output:
C