Answer:
If .xlsx file will not be exist , it will create a new spreadsheet file in excel and write whole data in that file.
Explanation:
.xlsx file is open xml zip compressed file which is created in Excel version 2007 or ahead of that.
Before excel version 2007, Excel spreadsheet file was saved with .xls format.
Hence we can say that .xlsx is an extended version of .xls file which is very compatible in using in this rapidly increasing technology.
