This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of menstruation, Subject name: Gynaecology & Obstetrics
Polymenorrhoea Means 
Select and explain. 
A. Menses < 21 days, B. Menses >35 days, C. Painful menses, D. DUB
A: Menses < 21 days
Answer: A: Menses < 21 days 
Explanation: Polymenorrhoea means regular and shoened cycles Reference: Shaw&;s textbook of gynaecology; 16th edition; Page no 293