A 29-year-old nurse sustains a needlestick injury from a patient known to be HIV-positive with a high viral load. The injury occurs 1 hour ago. What is the most appropriate next step?AReassure; no post-exposure prophylaxis (PEP) is neededBStart triple-drug antiretroviral PEP as soon as possible and continue for 28 daysCWait for the nurse's baseline HIV test before starting PEPDOffer PEP only if seroconversion symptoms appearEGive a single dose of antiretroviral and no further treatmentCheck my answer