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
Which of the following can be present in hyperosmolar coma in a diabetic patient? 
Select and explain. 
A. Low plasma glucose, B. Low plasma potassium, C. High plasma pH, D. High plasma ketones
D: High plasma ketones
Answer: D: High plasma ketones 
Explanation: High plasma ketones