The nurse is conducting a physical examination of a child with suspected developmental dysplasia of the hip. Which finding would help confirm this diagnosis?

A high-pitched "click" is heard with hip flexion or extension.

A distinct "clunk is heard with Barlow and Ortolani maneuvers.

The thigh and gluteal folds are symmetric.

Abduction occurs to 75 degrees and adduction to within 30 degrees (with stable pelvis).