A 38-year-old woman complains of constant thirst, frequent urination, decreased appetite, and headache. Complete urinalysis results: clear colorless urine, mildly acidic reaction, no glucose, 24-hour diuresis reaches 12 liters. What hormone is deficient in this case, causing this pathological condition?

• A. Atrial natriuretic peptide
• B. Noradrenaline
• C. Insulin
• D. Glucagon
• E. Vasopressin