Which of the following formulas uses the correct syntax for referring to contiguous columns in an Excel table using structured references?

$=$SUM$($Table$1[$Column$1,$Column$2])$

$=$SUM$($Table$1[[$Column$1]$:$[$Column$2]])$

$=$SUM$($Table$1[$Column$1],[$Column$2])$

$=$SUM$($Table$1[$Column$1],$Table$1[$Column$2])$