A Radiograph of a Lateral Projection of the Lumbar Spine

A radiograph of a lateral projection of the lumbar spine reveals that the mid- to lower-intervertebral joint spaces are not open.The patient's waist was supported.Which of the following modifications will help open these joint spaces during the repeat exposure?

A) Increase the SID for less divergence of the x-ray beam.
B) Decrease waist support and/or angle the CR 5° to 8° cephalad.
C) Have the patient hold her breath on a deeper inspiration to expand the thorax and straighten the spine.
D) Increase waist support and/or angle CR 5° to 8° caudal.