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: Medicine
Which one of the following types of pancreatitis has the best prognosis - 
Select and explain. 
A. Gall stone pancreatitis, B. Alcoholic pancreatitis, C. Idiopathic pancreatitis, D. Traumatic pancreatitis
A: Gall stone pancreatitis
Answer: A: Gall stone pancreatitis 
Explanation: None