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
All of the following are features of obstructed labour, except : 
Select and explain. 
A. Hot dry vagina, B. Bandl's Ring, C. Unruptured membranes present, D. Tonic contracted uterus
C: Unruptured membranes present
Answer: C: Unruptured membranes present 
Explanation: Unruptured membranes present