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': 'Anaemia in human is caused by which worm: \nSelect and explain. \nA. Round worm, B. Hook worm, C. Strongyloides, D. Tape worm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hook worm', 'role': 'assistant'}]