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': 'Stress induced hyperglycemia is mediated through which hormone: \nSelect and explain. \nA. Insulin, B. Glucagon, C. Thyroxine, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Glucagon', 'role': 'assistant'}]