A Right PA Oblique Chest Projection (RAO Position) with Poor

Multiple Choice

A right PA oblique chest projection (RAO position) with poor positioning demonstrates almost equal lung fields on both sides of the vertebral column and nine posterior ribs above the diaphragm. How could the positioning setup be adjusted for an optimal image to be obtained?
1) Take the exposure after the second full inspiration.
2) Increase the degree of patient obliquity.
3) Decrease the degree of patient obliquity.
4) Move the IR and central ray inferiorly.

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