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: Surgery
Treatment of choice for simple cyst of liver 
Select and explain. 
A. Percutaneous drainage, B. Deroofing, C. Observation, D. Aspiration
B: Deroofing
Answer: B: Deroofing 
Explanation: Deroofing is the treatment of choice for simple cyst of liver.