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': 'Two litres of normal saline in 4 hours will stimulate secretion of - \nSelect and explain. \nA. Atrial natriuretic peptide, B. IL - 2, C. TNF - alpha, D. Prostaglandins', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]