To Demonstrate Long Bones with the Least Amount of Distortion

Multiple Choice

To demonstrate long bones with the least amount of distortion and obtain optimal anatomical alignment,
1) align the CR perpendicular to the IR and the long axis of the bone.
2) align the IR parallel to long axis of the bone.
3) use the law of isometry when the long bone is parallel to the IR.
4) use the law of isometry to minimize foreshortening.

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