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: Gynaecology & Obstetrics
[{'content': 'During active labor cervIcal dilatation per hour in a primigravida is \nSelect and explain. \nA. 1.0 cm, B. 1.5 cm, C. 1-7 cm, D. 2 cm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In primigravida dilatation of cervix at the rate of 1cm/hr and in multigravida -1.5cm/hr.D.C.DUTTA&;S TEXTBOOK OF OBSTETRICS,Pg no:130,7th edition', 'role': 'assistant'}]