If A = \( \begin{bmatrix}
a&b\\c&d
\end{bmatrix}\) such that ad – bc ≠ 0 then A-1 is:
(a) \(\frac{1}{ad-bc} \begin{bmatrix}
d&b\\-c&a
\end{bmatrix}\)
(b) \(\frac{1}{ad-bc} \begin{bmatrix}
d&b\\c&a
\end{bmatrix}\)
(c) \(\frac{1}{ad-bc} \begin{bmatrix}
d&-b\\-c&a
\end{bmatrix}\)
(d) \(\frac{1}{ad-bc} \begin{bmatrix}
d&-b\\c&a
\end{bmatrix}\)