A Qualified X-Ray Service Engineer Should Be Used to Evaluate

A qualified x-ray service engineer should be used to evaluate and correct the following radiographic/fluoroscopic imaging features:
1) film processor sensitometry
2) automatic brightness control
3) source-to-skin distance limits
4) fluoroscopic contrast
5) image display monitor brightness/contrast
6) AEC reproducibility

A) 1, 2, 4, and 5 only
B) 2, 3, 5, and 6 only
C) 2, 4, 5, and 6 only
D) 1, 3, 4, and 6 only