If $$A = \left[ {\matrix{ 2 & { - 3} \cr { - 4} & 1 \cr } } \right]$$, then adj(3A2 + 12A) is equal to

Question

If $$A = \left[ {\matrix{ 2 & { - 3} \cr { - 4} & 1 \cr } } \right]$$,

then adj(3A² + 12A) is equal to

$$\left[ {\matrix{ {51} & {63} \cr {84} & {72} \cr } } \right]$$

$$\left[ {\matrix{ {51} & {84} \cr {63} & {72} \cr } } \right]$$

$$\left[ {\matrix{ {72} & {-63} \cr {-84} & {51} \cr } } \right]$$

$$\left[ {\matrix{ {72} & {-84} \cr {-63} & {51} \cr } } \right]$$

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