This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Normal Labour, Subject name: Gynaecology & Obstetrics
[{'content': 'A primigravida came with 6 cm cervical dilatation with contraction rate of 3/10 minutes. Which stage of labor is she in? \nSelect and explain. \nA. 1st stage, B. 2nd stage, C. 3rd stage, D. 4th stage', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANS. A* 1st stage (onset of true labor pain to full cervical dilatation)* 2nd stage (delivery of baby)* 3rd stage (delivery of placenta* 4th stage (1 hour observation).# Pictorial representation of stages of labor', 'role': 'assistant'}]