This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': 'In sebaceous glands accumulation of sebum leads to \nSelect and explain. \nA. Millia, B. Acne, C. Epidermoid cyst, D. Milliria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Acne -etiopathogenesis: follicular hyperkeratinization increased sebum production colonization of the pilosebaceous unit with Propionibacterium acnes production of inflammatory mediators Reference Harrison20th edition pg 1278', 'role': 'assistant'}]