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
Premature rupture of membrane is rupture : 
Select and explain. 
A. At less than 32 weeks, B. Before onset of labour, C. Before 2nd stage of labour, D. All of the above
B: Before onset of labour
Answer: B: Before onset of labour 
Explanation: Before onset of labour