Which of these statements is false?

A) Cross-sectional occlusal radiographs of the mandible are taken with the occlusal plane perpendicular to the floor.
B) Topographical occlusal radiographs of the mandible may be taken with the head positioned the same as for maxillary topographical occlusal radiographs.
C) An image receptor holder is not required for stabilization of the image receptor.
D) Mandibular topographical radiographs are taken with the midsagittal plane parallel to the floor.

D
Explanation: A) Topographical occlusal radiographs of the mandible may be taken with the head positioned the same as for maxillary exposures, with the occlusal plane parallel to the floor and the midsagittal plane perpendicular to the floor.
B) Topographical occlusal radiographs of the mandible may be taken with the head positioned the same as for maxillary exposures, with the occlusal plane parallel to the floor and the midsagittal plane perpendicular to the floor.
C) Topographical occlusal radiographs of the mandible may be taken with the head positioned the same as for maxillary exposures, with the occlusal plane parallel to the floor and the midsagittal plane perpendicular to the floor.
D) Topographical occlusal radiographs of the mandible may be taken with the head positioned the same as for maxillary exposures, with the occlusal plane parallel to the floor and the midsagittal plane perpendicular to the floor.