At a health fair, the nurse is teaching attendees about acute kidney injury (AKI). What statement made by a participant indicates a need for further teaching?

A. Duration of AKI is around 2 to 3 weeks: Acute kidney injury typically develops over hours to days, and mild cases may resolve within 1–3 weeks with appropriate treatment. This reflects the temporary and potentially reversible nature of the condition. B. AKI is usually not reversible: Acute kidney injury is often reversible if the underlying cause is identified and treated promptly. Permanent kidney damage is not typical in the majority of AKI cases, so this statement indicates a misunderstanding. C. The onset of AKI is sudden: AKI develops rapidly, often within hours to days, distinguishing it from chronic kidney disease, which progresses slowly over months to years. Rapid onset is a key characteristic of AKI. D. AKI involves 50% of nephrons: Significant reduction in nephron function, often around 50%, is associated with clinical manifestations such as decreased urine output and elevated serum creatinine. This level of nephron involvement corresponds with impaired renal function seen in AKI.