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': 'A patient of Acute lymphocytic leukemia with fever and neutropenia develops diarrhoea after administration of amoxicillin therapy, which of the following organism is most likely to be the causativeagent - \nSelect and explain. \nA. Salmonella typhi, B. Clostridium difficile, C. Clostridium perfringens, D. Shigella flexneri', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Clostridium difficile", 'role': 'assistant'}]