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
Average rate of cervical dilation is : 
Select and explain. 
A. 1 cm/hour, B. 2 cm/hour, C. 3 cm/hour, D. 4 cm/hour
A: 1 cm/hour
Answer: A: 1 cm/hour 
Explanation: 1 cm/hour