Detailed Instructions: In this task, you will be presented with a question having multiple possible answers in Japanese language. And you should choose a most suitable option out of "A", "B", "C", "D", and "E" based on your commonsense knowledge.
Q: Question: 北米最大の書籍群とは？ 
 Options: A 机 B 学舎 C 押入れ D 国会図書館 E 教室 
A:
D