Violation

Occipital and/or cervical extra-oral anchorage 1. enhances anterior tooth movement. 2. enhance mandibular forward growth. 3. restricts posterior tooth movement. 4. restricts maxillary forward growth

(4) only

All of the above.

(2) and (4)

(1) and (3)

(1) (2) (3)

Please describe the matter of abuse