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.

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