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
Second stage of labour is from: 
Select and explain. 
A. Onset of contraction to rupture of membranes, B. Onset of contractions to full dilation, C. Rupture of membranes to delivery of fetus, D. Full dilatation to delivery of fetus
D: Full dilatation to delivery of fetus
Answer: D: Full dilatation to delivery of fetus 
Explanation: Full dilatation to delivery of fetus