The circuit reads two $32-$bit register values A and B$.$ The same circuit also includes an adder $($A$+$B$),$ subtractor $($A$-$B$),$ bit shift to left by $2($input A$),$ and bit shift to right by $2($input B$).$ The circuit must select one output from the above four operations using a $2-$bit 'selector' signal. Draw the circuit diagram.