A client with chronic kidney disease (CKD) has an arteriovenous (AV) fistula in the left forearm. Which observation by the nurse indicates that the fistula is patent?

Assessment of a bruit on the left forearm.

Auscultation of a thrill on the left forearm.

The left radial pulse is 2+ bounding.

Distended, tortuous veins in the left hand.