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Solve this following

Question:

If $A$ is a 2-rowed square matrix and $|A|=6$ then $A \cdot \operatorname{adj} A=$ ?

A. $\left(\begin{array}{ll}6 & 0 \\ 0 & 6\end{array}\right)$

B. $\left(\begin{array}{ll}3 & 0 \\ 0 & 3\end{array}\right)$

C. $\left(\begin{array}{ll}3 & 0 \\ 0 & 3\end{array}\right)$

D. None of these

Solution:

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