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: Surgery
[{'content': 'A boil is due to staphylococcal infection of - \nSelect and explain. \nA. Hair follicle, B. Sweat gland, C. Subcutaneous tissue, D. Epidermis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: • Folliculitis, carbuncles and furuncles are all types of localized (superficial) skin infections that fall under the category of boils.\n• Hair follicles serve as portals for a number of bacteria, although S. aureus is the MC cause of localized folliculitis.', 'role': 'assistant'}]