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: What does gravity cause substances on a planet? (A) things to move sideways (B) things to be moved upwards (C) things to descend to the lowest surface possible (D) things to stay in the same place
Example Output: C

Example Input: Abusive relationships often lead to the abused in (A) future good relationships (B) in favorable outcomes (C) future bad relationships (D) in ideal situations
Example Output: C

Example Input: Plants are called producers because they may produce their own (A) time travel (B) feelings (C) vortex (D) sustenance
Example Output:
D