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: Pathology
Wilson's disease is due to mutation in which gene 
Select and explain. 
A. WT - 1, B. ATP7B, C. ATP7A, D. LMK - 2
B: ATP7B
Answer: B: ATP7B 
Explanation: Wilson's disease is due to mutation of ATP7B gene on chromosome 13q