If a matrix A is such that 4A^(3)+2A^(...

If a matrix A is such that
`4A^(3)+2A^(2)+7A+I=0`, then `A^(-1)` equals: a)`4A^(2)+2A+7I` b)`-(4A^(2)+2A+7I)` c)`-(4A^(2)-2A+7I)` d)`4A^(2)+2A-7I`

A

`4A^(2)+2A+7I`

B

`-(4A^(2)+2A+7I)`

C

`-(4A^(2)-2A+7I)`

D

`4A^(2)+2A-7I`

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The correct Answer is:

b

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