**Let\[A=\begin{bmatrix}1&4\\3&1\end{bmatrix} \] and \[B=\begin{bmatrix}3&1\\2&k\end{bmatrix}\] evaluate |AB|**

a) 22

b) \[\begin{bmatrix}11&1+4k\\11&3+k\end{bmatrix}\]

c) \[\begin{bmatrix}3&4\\6&k\end{bmatrix}\]

d) 22-33k

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