This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Gynae), Subject name: Gynaecology & Obstetrics
Lanugo hair appears at: 
Select and explain. 
A. 4 months, B. 5 moths, C. 6 months, D. 7 months
A: 4 months
Answer: A: 4 months 
Explanation: (4 months) (43-Dutta 6th) (2154-Nelson 17th)* At 16th week (4 month) lanugo (downy thin colourless hairs) appears but near term almost completely disappears.The homy layer of epidermis is absent before 20th week.