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If matrix

$A=diag \begin{bmatrix} 3 &5 &7 &8 \end{bmatrix} \; \; and \; \; matrix\; \; B = \begin{bmatrix} 5 & 0&0 &0 \\ 0 & 3& 0 & 0\\ 0 & 0& 1& 0\\ 0 &0 & 0&-2 \end{bmatrix}$

Then A-B =

Option 1)
diag $\begin{bmatrix} 0 &0 & 0 & 6 \end{bmatrix}$

Option 2)
diag $\begin{bmatrix} -2 &2 &6 &10 \end{bmatrix}$

Option 3)
diag $\begin{bmatrix} 3 &3 &1 &0 \end{bmatrix}$

Option 4)
diag $\begin{bmatrix} -2 &2 &6 &0 \end{bmatrix}$

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