This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Naevi and vessel related disorders, Subject name: Dental
[{'content': "The most common mucocutaneous manifestation of Wegener's granulomatosis (WG)? \nSelect and explain. \nA. Palpable purpura, B. Papulonecrotic lesions, C. Oral ulcers, D. Vesicles", 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common cutaneous manifestation of WG is Palpable purpura Others include - Tender subcutaneous nodules Oral ulcers: 2nd MC mucocutaneous lesion Papules Vesicles Petechiae Papulonecrotic lesions', 'role': 'assistant'}]