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
A woman is said to be having menorrhagia if the menstrual blood loss is more than : 
Select and explain. 
A. 20 ml, B. 40 ml, C. 60 ml, D. 80 ml
D: 80 ml
Answer: D: 80 ml 
Explanation: 80 ml