What is the file extension ".csv" short for?

What is the file extension ".csv" short for?

• Client SMTP validation
• Computer system validation
• Common short values
• Comma separated values

EXPLANATION

 CSV is a simple file format used to store tabular data, such as a spreadsheet or database. Files in the CSV format can be imported to and exported from programs that store data in tables, such as Microsoft Excel or OpenOffice Calc. CSV stands for "comma-separated values".