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': 'Polymenorrhoea Means:a) Menses < 21 days b) Menses >35 daysc) Painful mensesd) DUB \nSelect and explain. \nA. b, B. c, C. ad, D. ab', 'role': 'user'}, {'content': 'Answer: C \nExplanation: • A normal menstrual cycle lasts from 21 -35 days, with 2 - 6 days of flow and an average blood loss of 20 to 60 ml.\n• Mean blood loss per cycle is 35 mL (since 35 mL is not given in option, so 5O mL is being taken as the correct answer).\n• Mean duration of menses is 4.7 days.\nIrregularities in Normal Menstrual Cycle:', 'role': 'assistant'}]