This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Papulosquamous Disorders, Subject name: Skin
[{'content': 'A Hanging Curtain Sign is seen in: \nSelect and explain. \nA. Hordeolum externum, B. Psoriasis, C. Lichen Planus, D. Pityriasis Rosea', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. d. Pityriasis RoseaHanging certain sign, collarette of scales, cigarette paper scales all are seen pityriasis rosea', 'role': 'assistant'}]