This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Obs), Subject name: Gynaecology & Obstetrics
Average age of menopause? 
Select and explain. 
A. 40, B. 45, C. 55, D. 60
B: 45
Answer: B: 45 
Explanation: Ans. B. 45* Menopause is defined as the time of cessation of ovarian function resulting in permanent amenorrhoea.* Menopause is a retrospective diagnosis as it takes 12 months of amenorrhoea to confirm that menopause has set in.* Menopause normally occurs between the ages of 45 and 50 years, the average age being 47 years.