Question
Assertion (A) : $\left[\begin{array}{lll}2 & 0 & 0 \\ 0 & 5 & 0 \\ 0 & 0 & 1\end{array}\right]$ and $\left[\begin{array}{lll}0 & 0 & 4 \\ 0 & 2 & 0 \\ 8 & 0 & 0\end{array}\right]$ are diagonal matrices.
Reason (R) : Every identity matrix is a diagonal matrix.

Answer

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