$A=\left[\begin{array}{lll}1 & 2 & 3 \\4 & 5 & 6\end{array}\right]$ এবং $B=\left[\begin{array}{cc}0 & 2 \\1 & 2 \\0 & -1\end{array}\right]$ হলে $AB =$ কত ?

$\left[\begin{array}{cc}2 & 3 \\4 & 12\end{array}\right]$

$\left[\begin{array}{cc}2 & 3 \\5 & 12\end{array}\right]$

$\left[\begin{array}{rr}-2 & -3 \\5 & 12\end{array}\right]$

$\left[\begin{array}{rr}2 & 3 \\-5 & -12\end{array}\right]$