Where Does the CR Enter the Patient for the AP

Multiple Choice

Where does the CR enter the patient for the AP oblique projection (Grashey method) of the shoulder?

A) Perpendicular to a point 2 inches medial and 2 inches superior to the superolateral border of the shoulder
B) Perpendicular to a point 2 inches lateral and 2 inches superior to the superolateral border of the shoulder
C) Perpendicular to a point 2 inches medial and 2 inches inferior to the superolateral border of the shoulder
D) Perpendicular to a point 2 inches lateral and 2 inches inferior to the superolateral border of the shoulder