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': 'Pigmented macules over palm seen on clinical examination. Histologically, proliferating melanocytes are found at the dermoepidermal junction. Diagnosis? \nSelect and explain. \nA. Halo nevus, B. Junctional nevus, C. Dermal Melanocytic nevus, D. Dysplastic nevus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. Junctional nevusJunctional melanocytic nevus presents as pigmented macules.Dermal melanocytic nevus is skin colored (nonpigmented), dome-shaped papule.', 'role': 'assistant'}]