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: Pathology
[{'content': 'Acquired, symmetric hyper pigmentation of the sun exposed skin of the face & neck which is strongly associated with pregnancy & use of oral contraceptives is called as \nSelect and explain. \nA. Melanoma, B. Cafe-au-Lait-spots, C. Freckle, D. Melasma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]