In MATLAB, different special characters have different meanings within the program script files. Match the correct special operator with its description.

$1$

@ $($At symbol$)$

$2$

$\%($Percent$)$

$3$

$($tilde$)$

$4$ : $($colon$)$

Match each of the options above to the items below.

Used for nonexecutable text

Handles reference and construction

Indexing and iteration of a loop

Argument placeholder and logical NOT