A 30-year-old nurse sustains a needlestick injury from a patient known to be HIV-positive with a high viral load. The exposure is within 1 hour. According to Canadian HIV PEP guidance, what is the most appropriate step?AReassure; no prophylaxis is needed if exposure is occupationalBStart combination antiretroviral post-exposure prophylaxis as soon as possibleCWait for baseline HIV serology before initiating prophylaxisDUse a single antiretroviral agent for 28 daysEOffer PEP only if seroconversion symptoms developCheck my answer