A $=\{$a$,$b$\}$

B $=\{1,2,3\}$

Select the the expression that is an element of A $\backslash$times B $\backslash$times B$.$

Group of answer choices

$($b$,2,3)$

$($b$,2,$a$)$

$($a$,$a$,1)$

$(2,1,1)$