The patient is seated on the edge of the radiographic table...bending forward and grasping the ankle so that the pelvis is tilted forward

The patient is seated on the edge of the radiographic table...bending forward and grasping the ankle so that the pelvis is tilted forward.
The center ray is directed vertically through the lumbosacral region.
This projection is called:
a- Chassard-lapine
b- Lateral
c- Taylor position
d- Lilienfeld position