The file extension of an Excel spreadsheet is

A.doc

B.txt

C.xls ✓ Correct

D.ppt

Correct answer: (C) .xls

Explanation

An Excel spreadsheet file carries the extension dot xls in its classic form.

The dot doc extension belongs to Word documents.

The dot txt extension marks plain text files.

The dot ppt extension belongs to PowerPoint slides.

Excel stores rows and columns of data in these files.

Add-on: newer Excel versions use the dot xlsx extension.

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