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
[{'content': 'During active labor, cervical dilatation per hour in primigravida is: March 2013 \nSelect and explain. \nA. 1 cm/hour, B. 1.5 cm/hour, C. 1.7 cm/hour, D. 2 cm/hour', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. 1 cm/ hour Dilatation of the cervix at the rate of 1 cm/hour in primigravidae and 1.5 cm/hour in multigravidae beyond 3 cm dilatation (active phase of labor) is considered satisfactory', 'role': 'assistant'}]