This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Interpret the paogram \nSelect and explain. \nA. Inadequate uterine contraction, B. cephalopelvic dispropoion, C. Prolonged latent phase, D. normal paogram', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ref : dutta 9th ed', 'role': 'assistant'}]