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
Number of sperms required for fertilization per oocyte in invitro fertilization is 
Select and explain. 
A. 100, B. 1000, C. 10000, D. 100000
D: 100000
Answer: D: 100000 
Explanation: 100000 sperms per oocyte is required for IVF.