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: Dental
[{'content': 'An 8 year old boy from Bihar presents with a 6 month 11/o an ill defined hypopigmented slightly atrophic macule on the face. The most likely diagnosis is – \nSelect and explain. \nA. Ptyriasis alba, B. Indeterminate leprosy, C. Morphacea, D. Calcium deficiency', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]