This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical Illness Complicating Pregnancy, Subject name: Gynaecology & Obstetrics
Which drug is given to prevent HIV transmission from mother to child, especially during breast feeding. 
Select and explain. 
A. Nevirapine, B. Lamivudine, C. Stavudine, D. Abacavir
A: Nevirapine
Answer: A: Nevirapine 
Explanation: The intrapaum and postpaum Nevirapine regimen, with one dose to the mother at the onset of labour and one dose to the child within 72 hours, provides the most feasible intervention yet for developing countries.