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
Raised serum amylase levels are used to diagnose - 
Select and explain. 
A. Autoimmune disease, B. Degenerative disease, C. Acute cholecystitis, D. Acute pancreatitis
D: Acute pancreatitis
Answer: D: Acute pancreatitis 
Explanation: None