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
A pregnant lady develops chickenpox. During which part of her pregnancy will it lead to highest chance of neonatal infection: 
Select and explain. 
A. Last 5 days, B. 12-16 week, C. 8-12 week, D. 16-20 week
A: Last 5 days
Answer: A: Last 5 days 
Explanation: None