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': 'Hypertrophy is a type of \nSelect and explain. \nA. Cell injury, B. Cellular adaptation, C. Carcinoma, D. Cell aging', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Physiological adaptive responses include:\xa0\n\nHypertrophy - increase in cell size\xa0\nHyperplasia - increase in the number of cells\xa0\nAtrophy - decrease in cell size and number\xa0\nMetaplasia - reversible replacement of one cell type by another differentiated cell type', 'role': 'assistant'}]