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
Salmon patch usually disappears by age ? 
Select and explain. 
A. One mouth, B. One year, C. Pubey, D. None of the above
B: One year
Answer: B: One year 
Explanation: Ans. is 'b' i.e., One year