If A = [(1,0,0),(0,1,0),(a,b,-1)] and I ...

If `A = [(1,0,0),(0,1,0),(a,b,-1)]` and I is the unit matrix of order 3, then `A^(2) + 2A^(4) + 4A^(6)` is equal to a)7 `A^(8)` b)7 `A^(7)` c)8I d)6I

A

7 `A^(8)`

B

7 `A^(7)`

C

8I

D

6I

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The correct Answer is:

A

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