The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In medically intractable seizures, which of the following modalities of treatment has shown the best seizure-free period?   (A) Epileptic surgery   (B) Deep brain stimulation   (C) Vagal stimulation   (D) Ketogenic diet
['(A) Epileptic surgery <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Epileptic surgery \n (B) Deep brain stimulation \n (C) Vagal stimulation \n (D) Ketogenic diet <> possible answers', '  In medically intractable seizures, which of the following modalities of treatment has shown the best seizure-free period? <> context@']