This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epilepsy and EEG, Subject name: Medicine
[{'content': 'In juvenile myoclonic epilepsy (JME), which is the most common presentation? \nSelect and explain. \nA. GTCS during sleep, B. GTCS on awake state, C. Myoclonus, D. Absence seizures', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Juvenile myoclonic epilepsy (JANZ syndrome) - Polygenetic inheritance, Strong family history - Onset: 10 -19 yrs. - Myoclonic Jerk (early morning) and prominent in morning after awakening. Consciousness is preserved unless severe - EEG: 4-6 Hz Polyspike pattern seen. - May develop GTCS in future and in 30% will also develop absence seizure in future Rx - Valproate (lifelong)', 'role': 'assistant'}]