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: Pathology
[{'content': 'A patient with the typical cutaneous lesions which are slightly elevated red or purple macules that are often covered by gray or yellow adherent scales. Forceful removal of the scale reveals numerous ‘carpet tack’ extensions, reveals the lesion as: \nSelect and explain. \nA. SLE, B. DLE., C. Lichen planus., D. Scleroderma.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The typical cutaneous lesions are slightly elevated red or\xa0purple macules that are often covered by gray or yellow\xa0adherent scales. Forceful removal of the scale reveals numerous ‘carpet tack’ extensions which had dipped into enlarged pilosebaceous canals. The lesions increase in size by\xa0peripheral growth, this feature partially characterizing the\xa0disease.', 'role': 'assistant'}]