Definition: In this task, you will be presented with a question that has multiple possible answers. You should choose the most suitable option out of "A", "B", "C", "D", and "E", based on your commonsense knowledge.
Input: Question: The man began to cogitate about cogitating, being able to do this meant he clearly he must what? 
 Options: A obsessive compulsive B mad C have brain D perambulate E sit quietly 

C