This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
[{'content': 'The most powerful feedback system for controlling plasma osmolarity and sodium concentration is \nSelect and explain. \nA. ADH and thirst, B. Salt, C. Angiotensin renin system, D. Angiotensin rennin system', 'role': 'user'}, {'content': "Answer: A \nExplanation: If osmotic pressure of the plasma is increased more than normal then the osmoreceptors are activated and ADH secretion increased. There's more receptors causes thirst and increase in the water intake. Daddy secretion causes water retention. This leads to dilution of ECF. Ref: page no 564 Textbook of physiology Volume 1 7th edition AK Jain", 'role': 'assistant'}]