Detailed Instructions: In this task, you will be presented with a question having multiple possible answers in Chinese language. And you should choose a most suitable option out of "A", "B", "C", "D", and "E" based on your commonsense knowledge.
Q: Question: 一个数字是通常的反应是什么？ 
 Options: A 算术题 B 电话簿 C 中式外卖菜单 D 统计学 E 轮盘 
A:
A