This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Decidual space is obliterated by : 
Select and explain. 
A. 10th week, B. 12th week, C. 14th week, D. 16th week
D: 16th week
Answer: D: 16th week 
Explanation: Women tend to have minimal bleeding in early pregnancy, usually in and around the time of next period. This is largely physiological called implantation bleeding and indicates that the decidual space is being obliterated by fusion of the decidua Vera with the decidua capsularis. reference: pg no:88 Sheila 2nd edition)