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: Physiology
[{'content': 'Which one of the following is not responsible for concentration of urine in the kidney - \nSelect and explain. \nA. Aldosterone, B. Angiotensinn, C. Vasopressin, D. Epinephrine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Epinephrine', 'role': 'assistant'}]