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.

Let me give you an example: Question: 牙科诊所处理了很多口外伤的患者，这些患者来自哪里？ 
 Options: (A) 城镇 (B) 密西根 (C) 办公楼 (D) 医院 (E) 学校 
The answer to this example can be: D
Here is why: This is the correct answer because the traumatic injuries are generally handled by the hospitals.

OK. solve this:
Question: 通过玩教材，孩子们在做什么？ 
 Options: A 学习 B 战斗 C 厌倦 D 受伤 E 玩耍 
Answer:
A