Answer:
A) banding
Step-by-step explanation:
In statistics or test scoring, banding is used to reduce the uncertainty of an estimate within a curve. Generally it is used by setting confidence and prediction bands, e.g. teachers grade tests with A, B, C, D or F, but not all tests with As are identical specially when data is "noisy" or abundant.
Noisy data is meaningless data, e.g. an essay might be too long because the student started repeating himself.
In this case, all three candidates were basically given an A, so any candidate chosen would qualify as ideal.