This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious Diseases, Subject name: Gynaecology & Obstetrics
Transmission of HIV infection from infected mother to child occurs most commonly during - 
Select and explain. 
A. Antenatal stage, B. Before delivery, C. Duringlabour, D. During lactation
C: Duringlabour
Answer: C: Duringlabour 
Explanation: Ans. is 'c' i.e.. During labour