A \( \begin{bmatrix} 2 & 0 \\ 0 & 2 \end{bmatrix} \)
B \( \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} \)
C \( \begin{bmatrix} 0 & 0 \\ 0 & 0 \end{bmatrix} \)
D \( \begin{bmatrix} 1 & 1 \\ 1 & 1 \end{bmatrix} \)
Correct Answer: Option B
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