Xls
Xlw
Wk1
123
Answer is Right!
Answer is Wrong!
The correct answer is A. Xls.
Excel files have a default extension of XLS in Excel-2003. This extension is used to identify Excel files on a computer. When you save an Excel file, the extension is automatically added to the file name. For example, if you save a file named “My Worksheet” in Excel, the file name will be “My Worksheet.xls”.
The XLS extension is used for Excel files that are created in Excel 97-2003. Excel files that are created in Excel 2007 or later use the XLSX extension.
The XLW extension is used for Excel files that are created in Excel 5.0 or earlier. The WK1 extension is used for Lotus 1-2-3 files. The 123 extension is used for Quattro Pro files.