This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'The principal use of ethosuximide is in: \nSelect and explain. \nA. Focal onset seizure, B. Alcohol withdrawal seizure, C. Absence seizure, D. Atypical absence seizure', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ethosuximide is mainly indicated for absence seizure. Ref: Harrisons principles of internal medicine, 18th edition, Page 3263, Table: 369/9.', 'role': 'assistant'}]