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
The incidence of Liver cysts in childhood polycystic kidney disease is - 
Select and explain. 
A. 5%, B. 10%, C. 18%, D. 50%
D: 50%
Answer: D: 50% 
Explanation: None