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
Most common complication of acute pancreatitis is - 
Select and explain. 
A. Pancreatic abscess, B. Pseudocyst, C. Phlegmon, D. Pleural effusion
B: Pseudocyst
Answer: B: Pseudocyst 
Explanation: None