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
[{'content': 'Growth hormone increases all of the following except: \nSelect and explain. \nA. Blood glucose concentration, B. Blood free fatty acid concentration, C. Protein synthesis, D. Metabolism of carbohydrates', 'role': 'user'}, {'content': 'Answer: D \nExplanation: GH results in the conservation of carbohydrates Ref: guyton and hall textbook of medical physiology 12 edition page number:551,552,553', 'role': 'assistant'}]