When Formulating an Exposure Technique Chart System, a Successful Sequence

Multiple Choice

When formulating an exposure technique chart system, a successful sequence of steps is as follows:
1) clinical trials
2) clinical fine-tuning
3) ongoing fine-tuning
4) creation of phantom images
5) using the phantom images to extrapolate a chart
6) selecting the optimal phantom image
7) phantom testing

A) 1, 4, 5, 2, 3, 6, 7
B) 4, 6, 1, 7, 2, 3, 5
C) 4, 6, 5, 7, 1, 2, 3
D) 7, 4, 5, 6, 1, 2, 3