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
In a child presenting with obstructive Jaundice all are elevated EXCEPT: 
Select and explain. 
A. Gamma glutamyl transpeptidase, B. Alkaline phosphatase, C. Glutamate dehydrogenase, D. 5' Nucleotidase
C: Glutamate dehydrogenase
Answer: C: Glutamate dehydrogenase 
Explanation: Elevations in serum Alkaline phosphatase, 5' nucleotidase, and g-glutamyl transpeptidase levels are sensitive indicators of obstruction or inflammation of the biliary tract.