If the sum of the matrices A and [(1,-5,...

If the sum of the matrices A and `[(1,-5,7),(-9,2,6),(-10,5,2)]` is `3l_(3)` (`I_(3) "denotes the unit matrix of order" 3)` and p = `[(-1,0,2),(0,0,3),(5,2,4)` then det ({(Adj A). `P^(-1)`} is equal to

A

-54

B

`1//54`

C

54

D

1

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The correct Answer is:

C

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