A 70-year-old man is started on gentamicin IV for suspected Gram-negative sepsis. He has baseline chronic kidney disease with an eGFR of 45 mL/min/1.73m². According to BNF guidance regarding aminoglycoside prescribing, what is essential?AAdminister a smaller loading doseBAdminister subsequent doses based on pre-dose (trough) levelsCAdminister subsequent doses based on post-dose (peak) levelsDMeasure serum levels only after 72 hoursEAvoid concomitant administration of IV fluidsCheck my answer