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': 'Menopause is defined as cessation of menstruation for - \nSelect and explain. \nA. 3 consecutive months, B. 6 consecutive months, C. 12 consecutive months, D. 15 consecutive months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]