An AP-PA Chest Projection (Lateral Decubitus Position) with Accurate Positioning

An AP-PA chest projection (lateral decubitus position) with accurate positioning demonstrates
1) a marker indicating the side of the patient adjacent to the cart.
2) equal posterior rib length on both sides of the chest.
3) the manubrium at the fifth thoracic vertebra.
4) nine or ten posterior ribs above the diaphragm.

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