Let A be matrix of order 2xx2 such that ...

Let A be matrix of order `2xx2` such that `A^(2)=0` (where 0 is null matrix) and I is an identify matrix.
`A^(2)-(a+d)A+(ad-bc)I` is equal to___

A

I

B

0

C

`-I`

D

none of these

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The correct Answer is:

B

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