This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Medicine
[{'content': 'Definitive diagnosis of acute pancreatitis is done by- \nSelect and explain. \nA. Lipase, B. S. alkaline phosphatase, C. Increased Ca++, D. Hyperglycemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans - A. Serum lipase activity increases in parallel with amylase activity and is more specific than amylase. A serum lipase measurement can be instrumental in differentiating a pancreatic or nonpancreatic cause for hyperamylasemia.', 'role': 'assistant'}]