Brendan is responsible for organizing his company's financial data. This includes a large number of data categories, some relating to personal employee information, some relating to purchasing or sales records, and others relating to salary and wage considerations. Of course, some of the data needs to be included in more than one category. What type of tool is he most likely to use in order to organize all the data?

A.
Relational database

B.
Analytics software

C.
Spreadsheet

D.
Desktop publishing software

A. Relational database