This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Anatomy
True labour pains include all except : 
Select and explain. 
A. Painful uterine contraction, B. Sho vagina, C. Progressive descent of presenting pa, D. Cervical dilatation
B: Sho vagina
Answer: B: Sho vagina 
Explanation: True labour pains: Cervical dilatation Regular and gradual increase in duration and frequency of contractions Bag of water is formed Associated with show Painful uterine contractions. Ref: Datta Obs 9e pg 110.