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 of the following is a feature of pernicious anaemia \nSelect and explain. \nA. Glossitis, B. Tingling or numbness of extremities, C. Nervous system involvement in 75 % cases, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In pernicious anaemia\nTriad\n\nGeneralised weakness\nSore and painful tongue\nTingling or numbness of extremities\n\n\nNervous system involvement is present in 75% of cases\nDegeneration of myelin sheath & peripheral nerves', 'role': 'assistant'}]