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
Ectopic pregnancy is associated with all except : 
Select and explain. 
A. Salpingitis, B. IUCD, C. Plastic procedure on the tube, D. None
D: None
Answer: D: None 
Explanation: None