This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'A 40 years old female presents with a 2 years history of erythematous papulopustular lesions on the convexities of face. There is background of erythema and telangiectasia. The most probable diagnosis would be? \nSelect and explain. \nA. Acne vulgaris, B. Rosacea, C. SLE, D. Polymorphic light eruptions', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The patient in is presenting with characteristic feature that define rosacea.', 'role': 'assistant'}]