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': 'THUMB PRINT APPEARANCE in culture film smear is seen in \nSelect and explain. \nA. bacillus anthrax, B. brucella, C. Bordetella, D. clostridium welchii', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]