If matrix A=[{:(3,2,4),(1,2,-1),(0,1,1):...

If matrix `A=[{:(3,2,4),(1,2,-1),(0,1,1):}]and A^(-1)=1/k` adj A, then k is

A

7

B

`-7`

C

`(1)/(7)`

D

11

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The correct Answer is:

D

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