For a lateral neonatal or infant chest projection, the

1. neonate or infant remains supine.
2. neonate or infant is elevated on a radiolucent sponge.
3. central ray is centered to the mammary line.
4. humeri are positioned at a 90-degree angle with the chest.
a. 1 and 2 only
b. 2 and 3 only
c. 1, 2, and 3 only
d. 1, 2, and 4 only

A