The correct option is D All of the above
Diabetic coma is an unconsciousness condition caused by the severe hyperglycemia or hypoglycemia. It is a medical emergency. Three different types of diabetic coma are identified: severe diabetic hypoglycemia; diabetic ketoacidosis resulting in unconsciousness from a combination of severe hyperglycemia, dehydration, shock and exhaustion. Thus, the correct answer is option D.