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
All are true about Abnormal uterine bleeding except 
Select and explain. 
A. 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
A: Blood loss of less than 50 ml
Answer: A: Blood loss of less than 50 ml 
Explanation: Normal Menstrual Loss
The 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