If $\begin{pmatrix} 2 & 1 \\ 3 & 2 \end{pmatrix} A = \begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}$, then the matrix A is

Question

$\begin{pmatrix} 2 & -1 \\ 3 & 2 \end{pmatrix}$

$\begin{pmatrix} 2 & 1 \\ 3 & 1 \end{pmatrix}$

$\begin{pmatrix} 2 & -1 \\ -3 & 2 \end{pmatrix}$

$\begin{pmatrix} 3 & -2 \\ -3 & 2 \end{pmatrix}$

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