A nurse is supervising an assistive personnel (AP) who is caring for a client with an indwelling urinary catheter. Which of the following actions taken by the AP indicates proper technique?

A. Keeping the drainage bag above waist level: The drainage bag should always remain below the level of the bladder to prevent backflow and infection. B. Disconnecting the catheter from the drainage bag to empty the bag: The bag should not be disconnected, as this increases infection risk. C. Using sterile gloves when emptying the drainage bag: Clean gloves (not sterile) are appropriate when emptying urine. D. Emptying the drainage bag when it is half full: Emptying at the halfway point prevents backflow due to overfilling and ensures accurate urine output measurement.