This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Hyponatremia in multiple myeloma is \nSelect and explain. \nA. TRUE, B. Relative, C. Absolute, D. Pseudo', 'role': 'user'}, {'content': "Answer: D \nExplanation: Pseudohyponatremia Patients with multiple myeloma also have a decreased anion gap because of the M component is cationic, resulting in retention of chloride This is often accompanied by hyponatremia that is felt to be aificial (pseudohyponatremia) because each volume of serum has less water as a result of the increased protein Ref: Harrison's 19th edition Pgno : 714", 'role': 'assistant'}]