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
The most common complication of an ovarian tumor is : 
Select and explain. 
A. Torsion, B. Hemorrhage, C. Infection, D. Hyaline change
A: Torsion
Answer: A: Torsion 
Explanation: Torsion