$A=\left[\begin{array}{r}4 \\-1 \\3\end{array}\right], B=\left[\begin{array}{lll}1 & 2 & 3\end{array}\right]$ হলে $AB=$ কত ?

$[4-29]$

$\left[\begin{array}{r}4 \\-2 \\9\end{array}\right]$

$\text { [11] }$

$\left[\begin{array}{rrr}4 & 8 & 12 \\-1 & -2 & -3 \\3 & 6 & 9\end{array}\right]$