A Radiograph of an AP KUB Reveals That the Obturator

A radiograph of an AP KUB reveals that the obturator foramina are cut off from the bottom of the image.The kidneys and symphysis pubis are demonstrated.What centering adjustments should the technologist make to improve this image?

A) Use two 35 *42 cm (14 *17 inch) cassettes crosswise.
B) Center the cassette 2 inches (5 cm) below the iliac crest.
C) Open up the collimators to include the ischial tuberosities.
D) This radiograph is correctly centered. No centering adjustments are necessary.