If $A=\begin{bmatrix}1 &0 \0& 1 \end{bmatrix}$ then $A^{-1}$ is

Question

Accepted Answer

$\begin{bmatrix}1 &0 \0& 1 \end{bmatrix}$

Answer

$\begin{bmatrix}2 &0 \0& 2 \end{bmatrix}$

Answer

$2\begin{bmatrix}1 &0 \0& 1 \end{bmatrix}$

Answer

$\begin{bmatrix}0 &1\0& 1 \end{bmatrix}$