This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin Cancer, Subject name: Skin
[{'content': 'This classical presentation is of ? \nSelect and explain. \nA. Pityriasis Rosea, B. P.alba, C. P.Rubra, D. P.Versicolor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (A) Pityriasis Roasea The Picture shows inverted Christmas tree appearance of lesions suggestive of diagnosis of Pityriasis Rosea. The essential clinical features are the following: * Discrete circular or oval lesions * Scaling on Most Lesions * Peripheral Collarette scaling with central clearance on at least two lesions.', 'role': 'assistant'}]