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: Physiology
[{'content': 'After 5 days of fasting a man undergoes oral GTT, true is all except : \nSelect and explain. \nA. GH levels are increased, B. Increased glucose tolerance, C. Decreased insulin levels, D. Glucagon levels are increased', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Increased glucose toterance', 'role': 'assistant'}]