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: Surgery
[{'content': 'Which of the following anaemias is a risk factor for the development of gastric carcinoma - \nSelect and explain. \nA. Pernicious anaemia, B. Megaloblastic anaemia, C. Aplastic anaemia, D. Haemolytic anaemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]