A well-appearing 38-day-old infant has fever 38.6°C (101.5°F), normal exam, and no focal source. According to AAP 2021, which initial evaluation/management is appropriate?ALumbar puncture and IV antibiotics for all 29-60 dBNo labs; discharge with antipyreticsCUrinalysis/urine culture, blood culture, and inflammatory markers; LP deferred unless high-risk; outpatient management if low-riskDOnly urinalysis and discharge if negativeEChest radiograph and LP in all febrile infantsCheck my answer