This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Skin
[{'content': "Psoriasis is characterised by \nSelect and explain. \nA. Darier's sign, B. Auspitz sign, C. Nikolsky's sign, D. Gottoson's sign", 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Auspitz sign # Auspitz Sign: Psoriasis (pin point bleeding from a lesion when rubbed with a spatula to remove loose scales which indicated patch thinning of epidermis overlying papillary process of dermis.', 'role': 'assistant'}]