With respect to laboratory findings in diabetic ketoacidosis (DKA) and hyperglycemic hyperosmolar nonketotic coma (HHNC), all of the following guidelines are generally true EXCEPT: A. BUN is elevated more in patients with HHNC (>50 mg/dL) than in patients with DKA (25-50 mg/dL). B. Serum bicarbonate is typically severely low (<10mEq) in patients with either DKA or HHNC. C. Serum ketones are present in patients with DKA but not usually in patients with HHNC. D. Patients with HHNC typically have blood glucose > 700 mg/dL, whereas patients with DKA have blood glucose > 350 mg/dL. E. Serum osmolality in patients with HHNC is typically > 350 mOsm/L.