For the lateral projection of L5-S1: 1.The patient is in lateral position 2.The hips and knees are extended 3.The cassette is centered at the level of the transverse plane that passes midway between the iliac crests and the ASIS 4. A cylinder cone may be used to greatly reduce the production of scatter radiation 5.The central ray is directed to a point 1.5 inches anterior to the palpated spinous process of L5
a. 1, 2, 3, 5
b. 1, 3, 4, 5
c. 1, 2
d. 1, 2, 3, 4, 5