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. Lichen planus pigmentosus, C. Urticaria pigmentosa, D. Pityriasis alba
D: Pityriasis alba
Answer: D: Pityriasis alba 
Explanation: In melasma brown / grey brown macular pigmentation with well defined scalloped margins. Pigmentation darkens on sun exposure.
Lichen planus produces hyper pigmented lesions.
Pityriasis Alba produces scaly hypo pigmented macules.