Select the expression that will complete the if statement and allow line $4$ to execute

$1$ #$!/$bin$/$bash

$2$ declare $-$l MYVAR$=$'ORB'

$3$ if $????????$; then

$4$ echo $MYVAR

$5$ fi

Group of answer choices

$[$ $MYVAR $=$ "ORB" $]$

$[$ $MYVAR $-$eq "ORB" $]$

$[$ $MYVAR $=$ "orb" $]$

$[$ $MYVAR $-$eq "orb" $]$