Write the cofactor of \( a_{21} \) of the matrix \( A \) \( \mathrm...

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Write the cofactor of \( a_{21} \) of the matrix \( A \)
\( \mathrm{P} \)
\[
A=\left[\begin{array}{ccc}
-5 & 0 & 4 \\
2 & 1 & 5 \\
-1 & 3 & 6
\end{array}\right]
\]
W
(1) -11
(2) 12
(3) -12
(4) 10
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