A PA Oblique Scapular Y Shoulder Projection That Shows Accurate

Multiple Choice

A PA oblique scapular Y shoulder projection that shows accurate positioning of a patient with an anterior dislocation demonstrates
1) a Y formation.
2) the humeral head positioned anterior to the glenoid fossa beneath the coracoid.
3) superimposition of the medial and lateral scapular borders.
4) the humerus superimposed over the scapular body.

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