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: Skin
[{'content': "A young male presented with scaly truncal lesions. O/E genital lesions along with oral 'lace-like' lesions are seen. The most likely diagnosis is: \nSelect and explain. \nA. Lichen planus, B. Psoriasis, C. Secondary syphilis, D. Behcet's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: In oral lichen planus, the characteristic lesions are white striae or papules forming a reticular lace like pattern on the buccal mucosa or lateral margins of the tongue, often with a bilaterally symmetrical distribution. Ref: Principles and Practice of Geriatric Medicine edited by M.S. John Pathy, Alan J. Sinclair, John E. Morley, 2006, Page 265', 'role': 'assistant'}]