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
Which is a not an essential criteria according to WHO for normal semen analysis : 
Select and explain. 
A. Sperm count > 20 million / ml, B. Volume > 1 ml, C. Sperm with normal morphology (strict criteria) > 15%, D. Motility > 25% with rapidly progressive motilityTubal pathology
B: Volume > 1 ml
Answer: B: Volume > 1 ml 
Explanation: Volume > 1 ml