This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth and development, Subject name: Pediatrics
Nails are formed in which week of IUL ___________ 
Select and explain. 
A. 0-6 week, B. 10-12 week, C. 14-18 week, D. 20-24 week
B: 10-12 week
Answer: B: 10-12 week 
Explanation: Around week 11, the nail beds (the layer of cells underneath the fingernails and toe nails) begin to form; then in the second trimester, tiny nails will sprout up. There&;s nothing you can do to speed up, improve or impact the development of your little one&;s skin, hair and nails. Reference: GHAI Essential pediatrics, 8th edition