How do you adjust the width of a column to fit all the contents within a Microsoft Excel spreadsheet?

How do you adjust the width of a column to fit all the contents within a Microsoft Excel spreadsheet?

Press ALT and single click anywhere in the column

Press Ctrl $+$ E $($Command $+$ E on Macs$)$ to expand the column

Single click the boundary to the right of the column

Double click the boundary to the right of the column

None of the above