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: Microbiology
[{'content': 'Megaloblastic anaemia is caused by ? \nSelect and explain. \nA. Diphyllobothrium latum, B. Schistosoma hematobium, C. Echinococcus granulosus, D. Taenia solium', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., Diphylloboturium latum", 'role': 'assistant'}]