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
Hypopigmented lesions are seen in – 
Select and explain. 
A. Melasma, B. Pityriasis alba, C. Lichen planus pigmentosus, D. Urticaria pigmentosa
B: Pityriasis alba
Answer: B: Pityriasis alba 
Explanation: None