The function of the reciprocal clasp arm is to
1. act as an indirect retainer.
2. stabilize the abutment teeth.
3. act as a direct retainer for the distal base.
4. counteract any force transmitted by the retentive arm.

(2) and (4)

(1) (2) (3)

(1) and (3)

(4) only

All of the above.