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: Skin
An 8-year old boy from Bihar presents with a 6 month h/o an ill defined hypopigmented slightly atrophic macule on the face. The most likely diagnosis is: 
Select and explain. 
A. Ptyriasis alba, B. Indeterminate leprosy, C. Morphacea, D. Calcium deficiency
B: Indeterminate leprosy
Answer: B: Indeterminate leprosy 
Explanation: B i.e. Indeterminate leprosy