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': 'Central nervous system manifestation in chronic renal failure are result of all of the following, except: \nSelect and explain. \nA. Hyperosmolarity, B. Hypocalcemia, C. Acidosis, D. Hyponatremia', 'role': 'user'}, {'content': "Answer: B \nExplanation: Answer is B (Hypocalcemia): 'The total plasma calcium concentration in CRF patient is significantly low. Patient with chronic renal disease tolerate the hypocakemia quite ;veil and rarely is a patient symptomatic from the decreased calcium concentration. This may be paly due to concomitant acidosis.' - Harrison Hyponatremia, acidosis and hyper osmolarity can lead to various CNS manifestation as lethargy, altered mentation, seizure, coma, and paralysis etc.", 'role': 'assistant'}]