Definition: In this task, you will be presented with a question having multiple possible answers in Vietnamese language. And you should choose a most suitable option out of "A", "B", "C", "D", and "E" based on your commonsense knowledge.
Input: Question: Ăn trưa có thể gây ra đau đớn gì? 
 Options: A đau đầu B hơi thở hôi C ợ nóng D tăng cân E rắm 
Output:
C