<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 27-year-old woman consults an obstetrician as she is planning to become pregnant. She has been diagnosed with HIV human immunodeficiency virus infection recently and is currently taking antiretroviral therapy HAART, as prescribed by her physician. The obstetrician emphasizes the importance of antenatal and peripartum antiretroviral therapy for reducing the risk of mother-to-child transmission of HIV. She also tells the patient that certain antiretroviral drugs, if taken during pregnancy, increase the risk of birth defects in the fetus. She gives a printed list of such drugs to the woman for educational and informational purposes. Which of the following drugs are most likely to be present on the list?? A: Abacavir and Didanosine, B: Efavirenz and Delavirdine, C: Lamivudine and Nevirapine, D: Lopinavir and Ritonavir, E: Nelfinavir and Saquinavir,  <response>: This is a medical question asking about which antiretroviral drugs are most likely to increase the risk of birth defects if taken during pregnancy. The question stem provides background that a 27-year-old HIV-positive woman planning pregnancy is meeting with an obstetrician who informs her that certain antiretroviral drugs can increase birth defect risk. The choices list pairs of antiretroviral medications. To answer this, we need to identify which of the antiretroviral drugs listed are known to have increased risk of birth defects. This requires medical knowledge on the safety profiles of these drugs during pregnancy.B: Efavirenz and Delavirdine 