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': 'Difference in acne rosacea & acne vulgaris- \nSelect and explain. \nA. Pustule, B. Erythema, C. Papule, D. Absence of comedone', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Absence of comedone", 'role': 'assistant'}]