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': 'Which of the following can be present in hyperosmolar coma in a diabetic patient? \nSelect and explain. \nA. Low plasma glucose, B. Low plasma potassium, C. High plasma pH, D. High plasma ketones', 'role': 'user'}, {'content': 'Answer: D \nExplanation: High plasma ketones', 'role': 'assistant'}]