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: Gynaecology & Obstetrics
Which is the characteristic lesion of pregnancy? 
Select and explain. 
A. Vitiligo, B. Pemphigus, C. Tinea, D. Chloasma
D: Chloasma
Answer: D: Chloasma 
Explanation: Chloasma