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: Pediatrics
Most common cause of HIV infection in infant is – 
Select and explain. 
A. Perinatal transmission, B. Breast milk, C. Transplacental, D. Umbilical cord sepsis
A: Perinatal transmission
Answer: A: Perinatal transmission 
Explanation: None