<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 19-year-old man with a history of type 1 diabetes presents to the emergency department for the evaluation of a blood glucose level of 492 mgdL. Laboratory examination revealed a serum bicarbonate level of 13 mEqL, serum sodium level of 122 mEqL, and ketonuria. Arterial blood gas demonstrated a pH of 6.9. He is admitted to the hospital and given bicarbonate and then started on an insulin drip and intravenous fluid. Seven hours later when his nurse is making rounds, he is confused and complaining of a severe headache. Repeat sodium levels are unchanged, although his glucose level has improved. His vital signs include a temperature of 36.6C 98.0F, pulse 50min, respiratory rate 13min and irregular, and blood pressure 17795 mm Hg. What other examination findings would be expected in this patient?? A: Pupillary constriction, B: Hypoglycemia, C: Pancreatitis, D: Papilledema, E: Peripheral edema,  <response>: This is a clinical vignette about a 19-year-old man with type 1 diabetes presenting with diabetic ketoacidosis DKA. He was treated with insulin and fluids, and his glucose improved, but he now has a severe headache and unchanged hyponatremia. The key findings are the headache, unchanged hyponatremia, and hypertension. These suggest cerebral edema, a known complication of DKA treatment, especially in the setting of rapid changes in osmolality. Papilledema, or swelling of the optic disc, is a classic finding in cerebral edema due to increased intracranial pressure. The other answer choices do not fit with the clinical scenario.D: Papilledema 