Recording an unequal distribution of the arches is caused by incorrect

A) vertical angulation.
B) horizontal angulation.
C) centering of the x-ray beam.
D) aligning of the anterior edge of the image receptor with the teeth of interest.

A
Explanation: A) Incorrect vertical angulation results in an unequal distribution of the arches on the radiograph. A quality bitewing radiograph should image an equal portion of the maxillary and mandibular teeth plus a portion of the supporting bone.
B) Incorrect vertical angulation results in an unequal distribution of the arches on the radiograph. A quality bitewing radiograph should image an equal portion of the maxillary and mandibular teeth plus a portion of the supporting bone.
C) Incorrect vertical angulation results in an unequal distribution of the arches on the radiograph. A quality bitewing radiograph should image an equal portion of the maxillary and mandibular teeth plus a portion of the supporting bone.
D) Incorrect vertical angulation results in an unequal distribution of the arches on the radiograph. A quality bitewing radiograph should image an equal portion of the maxillary and mandibular teeth plus a portion of the supporting bone.