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: Social & Preventive Medicine
Antiretroviral prophylaxis decrease the chance of transmission of HIV to fetus during pregnancy of HIV to fetus during pregnancy by 
Select and explain. 
A. 35%, B. 45%, C. 50%, D. 65%
D: 65%
Answer: D: 65% 
Explanation: None