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': 'Citron bodies boat or leaf shaped pleomorphic organism in an exudate is - \nSelect and explain. \nA. Cl. welchii, B. Cl. edematiens, C. Cl. septicum, D. Cl. tetani', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]