What are the classic symptoms of diabetes insipidus (DI)?

A. Stress incontinence, vomiting, and edema: These are not the classic triad for diabetes insipidus. B. Diuresis, dehydration, and thirst: DI causes large volumes of dilute urine (polyuria/diuresis), leading to dehydration and intense thirst (polydipsia). C. Bradycardia, insomnia, and muscle cramps: Not characteristic of DI. D. Dizziness, hypertension, and excitability: DI more often causes hypotension or orthostatic symptoms from volume loss, not sustained hypertension or excitability.