The form of the distobuccal border of a mandibular denture is modified by
1. buccinator muscle.
2. masseter.
3. temporal tendon.
4. pterygomandibular raphe.
5. external oblique ridge.

(4) and (5)

(1) and (5)

(3) and (4)

(2) and (3)

(1) and (2)