Violation
Overlapping contacts on a bitewing radiograph result from the 1. malalignment of teeth. 2. increased vertical angulation of the x-ray beam. 3. incorrect horizontal angulation of the x-ray beam. 4. decreased vertical angulation of the x-ray beam.
(1) and (3)
(1) (2) (3)
(2) and (4)
(4) only
All of the above.