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
Fordyce disease most commonly effects 
Select and explain. 
A. Lips, B. Neck, C. Buccal mucosa, D. Trunk
A: Lips
Answer: A: Lips 
Explanation: 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