$AB$ ম্যাট্রিক্সটি হবে-

$\left[\begin{array}{l}28 \\22 \\40\end{array}\right]$

$\left[\begin{array}{l}22 \\28 \\40\end{array}\right]$

$\left[\begin{array}{ll}22 & 28 & 40\end{array}\right]$

$\left[\begin{array}{lll}28 & 22 & 40\end{array}\right]$