A 62-year-old man with fever, hypotension (MAP 54 mm Hg), lactate 5.2 mmol/L, and suspected pneumonia arrives in the ED. Which initial step is recommended as part of the hour-1/early resuscitation bundle?AAdminister 30 mL/kg IV crystalloid within the first 3 hoursBStart vasopressin as the first-line vasopressorCDelay antibiotics until blood culture results returnDTarget MAP >75 mm Hg with high-dose phenylephrineEGive hydroxyethyl starch 6% 30 mL/kgCheck my answer