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': 'Limpet-like cone-shaped lesions in psoriasis refers to: \nSelect and explain. \nA. Rupioid psoriasis, B. Elephantine psoriasis, C. Ostraceous psoriasis, D. Inverse psoriasis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Rupioid psoriasis refers to limpet-like cone-shaped lesions. The term elephantine psoriasis is used to describe persistent, thickly scaling, large plaques. Ostraceous psoriasis refers to a ring-like hyperkeratotic lesion with a concave surface, resembling an oyster shell. Ref: Rook's textbook of dermatology, 8th edition, Pg 20.12", 'role': 'assistant'}]