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': 'All are true about Abnormal uterine bleeding except \nSelect and explain. \nA. Blood loss of less than 50 ml, B. Cycle duration is more than 35 days or less than 21 days, C. Bleeding period lasting 7 days or more, D. Irregular bleeding during a regular cycle', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Normal Menstrual Loss\nThe upper limit of blood loss in a normal menstruation is considered as 80ml. Any bleeding above the specified normal limit is termed as abnormal uterine bleeding', 'role': 'assistant'}]