This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ABG Analysis Simplified, Subject name: Medicine
[{'content': 'Anion gap decreases with all except? \nSelect and explain. \nA. Plasma cell dyscrasia, B. Ethylene glycol, C. Protein losing enteropathy, D. Nephrotic syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Anion gap decreases in Nephrotic Syndrome Protein losing enteropathy Plasma cell dyscrasia (M.myeloma)', 'role': 'assistant'}]