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
Pelvic inflammatory disease is caused by all except : 
Select and explain. 
A. Schistosomiasis, B. Crohn's disease, C. Syphilis, D. Leprosy
D: Leprosy
Answer: D: Leprosy 
Explanation: Leprosy