This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid & Electrolyte, Subject name: Medicine
[{'content': "Which among the following causes 'Euvolvemic hyponatremia*? \nSelect and explain. \nA. Nephrotic syndrome, B. SIADH, C. Diarrhea, D. Vomiting", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ref: Nelson's Textbook of Pediatrics 18th edition: page no.275 & Harrison's 18th editionExplanation:Refer previous question's explanation.", 'role': 'assistant'}]