This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
15 million sperm/ml of semen with total 15% motile sperm signifies 
Select and explain. 
A. Aspermia, B. Asthenozoospermia, C. Oligozoospermia, D. Oligoasthenozoospermia
D: Oligoasthenozoospermia
Answer: D: Oligoasthenozoospermia 
Explanation: Aspermia - Lack of secretion or expulsion of semen following ejaculation.Asthenozoospermia - Loss or reduction of mobility of sperms, frequently associated with infeility. Oligozoospermia - low spermatozoon countOligoasthenozoospermia is a combination of:Asthenozoospermia (reduced sperm motility)Oligozoospermia (low spermatozoon count)Ref: Ganong&;s review of medical physiology;24th edition; page no:-427