This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver disorders, Subject name: Pediatrics
[{'content': "In a child presenting with obstructive Jaundice all are elevated EXCEPT: \nSelect and explain. \nA. Gamma glutamyl transpeptidase, B. Alkaline phosphatase, C. Glutamate dehydrogenase, D. 5' Nucleotidase", 'role': 'user'}, {'content': "Answer: C \nExplanation: Elevations in serum Alkaline phosphatase, 5' nucleotidase, and g-glutamyl transpeptidase levels are sensitive indicators of obstruction or inflammation of the biliary tract.", 'role': 'assistant'}]