What positioning error occurred if the mandibular rami superimpose C1 and C2 on the lateral c-spine image?
the patient's mouth wasn't fully opened
the chin was too flexed
the head was rotated
the chin was too extended
the head was rotated
Rationale: The AP open mouth should demonstrate the relationship of C1 and 2 centered in the open mouth and between the mandibular rami.
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