This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hyper Pigmented Disorders, Subject name: Dental
[{'content': 'Pigmentation due to increased melanin production but no melanocyte proliferation, is seen in? \nSelect and explain. \nA. Nevus, B. Ephelides, C. Lentigo, D. Melanoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Causes of Hyperpigmentation Increased pigment( melanin) production Ephelides (freckles) Cafe au lait macule Post inflammatory hyperpigmentation Proliferation of melanocytes Lentigo Nevus Melanoma', 'role': 'assistant'}]