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: Pathology
[{'content': 'All are reversible injury of cell, except - \nSelect and explain. \nA. Vacuole, B. Karyorrhexis, C. Fat accumulation, D. Cell wall swelling', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Karyorrhexis", 'role': 'assistant'}]