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: Gynaecology & Obstetrics
A 30 year old housewife repos with 6 months amenorrhoea. Her serum LH and FSH are high with low estradiol levels. What is the most likely cause of amenorrhoea : 
Select and explain. 
A. Pituitary tumour, B. Polycystic ovarian disease, C. Exercise induced, D. Premature menopause
D: Premature menopause
Answer: D: Premature menopause 
Explanation: Premature menopause