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: 非常に複雑で難しいテーマの学習に時間を費やした場合、誰かが経験するであろうネガティブなことは何でしょうか？ 
 Options: A 昂揚 B ちしきを得る C 頭痛 D 進出 E 輔佐 
A:
C