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': 'Absence seizures are characterized on EEG by- \nSelect and explain. \nA. 3 Hz spike & wave, B. 1-2 Hz spike & wave, C. Generalized polyspikes, D. Hypsarrythmia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]