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
Feilised ovum is embedded in the endometrium at about which day after feilization : 
Select and explain. 
A. Second day, B. Fouh day, C. Sixth day, D. Eight day
D: Eight day
Answer: D: Eight day 
Explanation: Eight day