This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'In a patient if administration of exogeneus vasopressin does not increase the osmolality of urine the likely cause is \nSelect and explain. \nA. SIADH, B. Psychogenic polydipsia, C. Renal Hyposensitivity to ADH, D. ADH Deficiency', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Renal Hyposensitivity to ADH): Failure of urine osmolality to rise even after administration of exogenous ADH/vasopressin suggests a diagnosis of Nephrogenic Diabetes Insipidus due resistance to action of vasopressin on the Renal tubule (Renal Hyposensitivity to ADH).', 'role': 'assistant'}]