This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin lesions, Subject name: Dental
[{'content': 'Discoid lesion seen in: \nSelect and explain. \nA. Prelymphomatous eruption, B. Pityriasis versicolor, C. Tinea capitis, D. Lichen nitidus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Discoid lesion is seen in Prelymphomatous eruption Macules - Pityriasis Versicolor Erythematous papules - Tinea capitis Flat topped micropapules -Lichen Nitidus', 'role': 'assistant'}]