Overlapping of adjacent teeth on the radiographic image most likely results from an error made in which of the following steps?

A) Placement of the image receptor
B) Horizontal angulation
C) Vertical angulation
D) Centering the x-ray beam

B
Explanation: A) Incorrect rotation of the tube head and PID in the horizontal plane results in overlap error. Superimposition of the proximal surfaces occurs when the central ray of the x-ray beam is not directed perpendicular through the interproximal spaces to the image receptor. Overlapped contacts result when the central ray of the x-ray beam is directed obliquely toward the image receptor from the distal or from the mesial.
B) Incorrect rotation of the tube head and PID in the horizontal plane results in overlap error. Superimposition of the proximal surfaces occurs when the central ray of the x-ray beam is not directed perpendicular through the interproximal spaces to the image receptor. Overlapped contacts result when the central ray of the x-ray beam is directed obliquely toward the image receptor from the distal or from the mesial.
C) Incorrect rotation of the tube head and PID in the horizontal plane results in overlap error. Superimposition of the proximal surfaces occurs when the central ray of the x-ray beam is not directed perpendicular through the interproximal spaces to the image receptor. Overlapped contacts result when the central ray of the x-ray beam is directed obliquely toward the image receptor from the distal or from the mesial.
D) Incorrect rotation of the tube head and PID in the horizontal plane results in overlap error. Superimposition of the proximal surfaces occurs when the central ray of the x-ray beam is not directed perpendicular through the interproximal spaces to the image receptor. Overlapped contacts result when the central ray of the x-ray beam is directed obliquely toward the image receptor from the distal or from the mesial.