This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'In a person who has fasted for 5 days all are seen except \nSelect and explain. \nA. GH levels decreased, B. Glucose tolerance decreased, C. Immunoreactive insulin decreased, D. Free fatty acids(plasmal) increased', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]