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 flew his airplane over the city and saw pollution visibly in the sky, what was polluted? 
 Options: A air B street C forest D caused by humans E car show 

A