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
First stage of labour is up to : 
Select and explain. 
A. Rupture of membranes, B. 3/5 dilatation of cervix, C. Full dilatation of cervix, D. Crowing of head
C: Full dilatation of cervix
Answer: C: Full dilatation of cervix 
Explanation: Full dilatation of cervix