Which of the following is not a spreadsheet data file type?

• A. CSV
• B. XML
• C. XLSX
• D. XLS

Answer: (B)

Spreadsheet data file types are formats specifically designed to store tabular data with rows and columns, often supporting features like cells, formulas, formatting, and multiple sheets. The one that isn’t a spreadsheet data file type is a general-purpose markup language used to structure and transport data. XML is built to describe data with tags and hierarchical structure, not to represent a flat grid of cells by default. CSV, XLSX, and XLS are all directly associated with tabular spreadsheets: CSV stores data as plain text with delimiters for rows and columns, while XLS and XLSX are native spreadsheet formats used by Excel that preserve cell references, formulas, formatting, and multiple sheets. XML can describe tabular data, and some spreadsheet workflows can use an XML schema to represent a sheet, but as a standalone format it isn’t a standard spreadsheet file type.