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: Dental
[{'content': 'Following is a bacterial infection – \nSelect and explain. \nA. Pyodenna gangrenosum, B. Impetigo herpitiformis, C. Pitted keratolysis, D. Mycosis fungoides', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pitted keratolysis is caused by opprtunistic bacteria corynebacterium dermatophilus congolensis.', 'role': 'assistant'}]