A Pregnant 25-Year-Old Woman with Known HIV Infection Presents to an Obstetric

A pregnant 25-year-old woman with known HIV infection presents to an obstetric office for a 20-week prenatal visit. This is her first pregnancy and thus far it has been uncomplicated. The patient was first diagnosed as HIV-positive seven years prior and she has remained asymptomatic. She has been compliant with her antiretroviral therapies. The patient reports that the father of her child is not HIV-positive.
-The patient asks the nurse for information about preventing HIV transmission to her sexual partner.What is the best form of prevention for HIV transmission,assuming sexual abstinence is not an option?  

A) Use of barrier-method contraceptive
B) Contraceptive drugs
C) Prophylactic treatment of all sexual partners with antiviral chemotherapy
D) compliance with antiretroviral regimen