For a PA Chest Projection with Accurate Positioning, the

Multiple Choice

For a PA chest projection with accurate positioning, the
1) SID is set at 72 inches (183 cm) .
2) shoulders are positioned at equal distances from the IR.
3) upper midcoronal plane is tilted slightly toward the IR.
4) elbows and shoulders are rotated posteriorly.

A) 1 and 2 only
B) 2 and 3 only
C) 1, 2, and 4 only
D) 1, 2, 3, and 4