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': 'All are features of hypernatremia, except - \nSelect and explain. \nA. Convulsion, B. Elevated intracranial tension, C. Periodic paralysis, D. Muscle twitching', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]