For an AP Shoulder Projection, the

For an AP shoulder projection, the
1) shoulders are positioned at equal distances from the IR.
2) central ray is centered 1 inch (2.5 cm) inferior to the coracoid.
3) imaginary line connecting the humeral epicondyles is positioned at a 45-degree angle to the IR.
4) central ray is angled cephalically when a kyphotic patient is imaged.

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