Which of the following is not an indication for bar clasp arm: (A) When a small degree of undercut exists in cervical third of abutment tooth, (B) On abutment teeth for tooth supported partial denture, (C) Soft tissue undercuts, (D) Distal extension bases
Answer is C. The specific indications for using a bar clasp arm are

When a small degree of undercut (0.01 inch) exists in the cervical third of the abutment tooth, which may be approached from a gingival direction.
On abutment teeth for tooth supported partial dentures or tooth supported modification areas .
In distal extension base situations.
In situations, where esthetics is a concern.