This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
Growth hormone increases all of the following except: 
Select and explain. 
A. Blood glucose concentration, B. Blood free fatty acid concentration, C. Protein synthesis, D. Metabolism of carbohydrates
D: Metabolism of carbohydrates
Answer: D: Metabolism of carbohydrates 
Explanation: GH results in the conservation of carbohydrates Ref: guyton and hall textbook of medical physiology 12 edition page number:551,552,553