The best postion to see the apex of the lung.. Erect AP Central ray 30o and CP under clavicle

The best postion to see the apex of the lung
a- Erect AP away from the buky 30o perpendicular and CP between dorso –lumber junction
b- Erect AP Central ray 30o and CP under clavicle
c- Apical view
d- All of the above