A report runs, and is 433 pages long, with 19,010 rows. Many of the rows are blank. The report author uses a filter function to filter nulls, and runs the report again. The result is 143 pages, with 6273 rows, and none of the rows are blank. What filtering style did the report author decide to use?
A. Conventional
B. Dimensional
C. Relational
D. Functional