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
Para - ovarian cyst are derived from : 
Select and explain. 
A. Wolffian duct, B. Mullerian duct, C. Ganers duct, D. Pronephros
A: Wolffian duct
Answer: A: Wolffian duct 
Explanation: Wolffian duct