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 term post traumatic epilepsy refers to seizures occuring - \nSelect and explain. \nA. Within moments of head injury, B. Within 7 days of head injury, C. Within several weeks to months after head injury, D. Many years after head injury', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]