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': 'Which is a reversible change - \nSelect and explain. \nA. Metaplasia, B. Anaplasia, C. Dysplasia, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dysplasia means disordered (abnormal) growth. It is partially reversible i.e. reversible in early stage and\xa0irreversible in the later stage.\nMetaplasia is an adaptive change in which one adult (mature) cell type is replaced by another adult\xa0(mature) cell. It is completely reversible.\nAnaplasia means lack of differentiation. Anaplasia is considered as a hallmark of malignant\xa0transformation. It is irreversible.', 'role': 'assistant'}]