Bucketization $($data transformation stage$)$ is about the process of defining several record groupings based on their sensitive values. Which of the following best describes the tasks specific to bucketization? Select all that apply.

Select one or more:

a$.$ Punctuation and white space may or may not be included in the resulting list token.

The apparent sensitive values of the records' attributes are identified and sorted in ascending order based on the attributes' frequencies.

c$.$ After sorting, the values are grouped into similar buckets.

d$.$ Only those containing distinct sensitive values are kept.