This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial infections, Subject name: Dental
[{'content': 'Fordyce disease most commonly effects \nSelect and explain. \nA. Lips, B. Neck, C. Buccal mucosa, D. Trunk', 'role': 'user'}, {'content': 'Answer: A \nExplanation: FSs are ectopic sebaceous glands seen commonly on the lips (upper lip > lower lip), buccal, and genital mucosa. Infrequently, they can also be seen on oesophagus, uterine cervix, sole of the foot, and tongue. Histopathologically, a FS consists of a sebaceous lobule or gland located in the dermis. The Dermoscopy of FS on the penile shaft has been described and it shows vascular "garlands-like" aspect whose "bows" seem to wind around yellowish bunch-like lobules without crossing them iadvl textbook of dermatology', 'role': 'assistant'}]