Let $A$ be $34$ matrix such that $\{(2,-6,-3,1)\}$ is a basis for the null space of $A.$ Which of the following is equil to the fourth column of the reduced row echelon fort of $A?$

$($a$).(2,-6,-3)$

$($b$)(-2,6,3)$

$($D$)(2,-0,-3)$

$($d$)(-\frac{1}{3},1,\frac{1}{2})$

$($e$)(3,-1,-2)$