If \( \mathrm{A}=\left[\begin{array}{cc}5 a & -b \\ 3 & 2\end{array...

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If \( \mathrm{A}=\left[\begin{array}{cc}5 a & -b \\ 3 & 2\end{array}\right] \) and \( \mathrm{A} \) adj \( \mathrm{A}=\mathrm{AA}^{\mathrm{T}} \), then \( 5 a+b \) is equal
\( \mathrm{P} \)
IV
to:
[JEE Main-2016]
(a) \( -1 \)
(b) 5
(c) 4
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