This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Staph, epidermis has become important due to \nSelect and explain. \nA. Biofilm formation, B. Virulence, C. Wide spectrum antibiotics, D. Novobiocin resistance', 'role': 'user'}, {'content': 'Answer: A \nExplanation: * S. epidermis is a pathogenic organism which affects interventions like catheter, canula.* It is an organism which can form biofilm.* It is novobiocin sensitive.', 'role': 'assistant'}]