A mandibular right second molar has tipped mesially into the adjacent edentulous space. Which of the following tooth movements will most likely occur when uprighted by fixed orthodontic therapy (fixed appliance on teeth 4.7, 4.5, 4.4 and 4.3)?
1. Extrusion of the second molar.
2. Lingual tipping of the second molar.
3. Intrusion of the anchor unit.
4. Buccal tipping of the anchor unit.

All of the above.

(1) (2) (3)

(1) and (3)

(2) and (4)

(4) only