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
What is the graphical record of cervical dilatation in centimeters against duration of labour in hours called ? 
Select and explain. 
A. Paogram, B. Pictogram, C. Hysterograph, D. Amniograph
A: Paogram
Answer: A: Paogram 
Explanation: Paogram