Bar clasp and circumferential clasp arms are similar in that both
1. terminate in a retentive undercut lying gingival to the height of contour.
2. originate from the framework and approach the tooth undercut area from a gingival direction.
3. provide retention by the resistance of metal to deformation rather than frictional resistance of parallel walls.
4. originate above the height of contour, traverse a portion of the suprabulge and approach the tooth undercut from an occlusal direction.

All of the above.

(4) only

(2) and (4)

(1) (2) (3)

(1) and (3)