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If A=[{:(a, b), (c, d):}] " then " A^(-1...

If A`=[{:(a, b), (c, d):}] " then " A^(-1)` = ____. a)`(1)/(ad-bc)[(b,-c),(-d,a)]` b)`(1)/(ab-cd)[(b,-c),(-d,a)]`c)`(1)/(ab-cd)[(b,d),(c,a)]` d)None of these

A

`(1)/(ab-cd)[(b,-c),(-d,a)]`

B

`(1)/(ad-bc)[(b,-c),(-d,a)]`

C

`(1)/(ab-cd)[(b,d),(c,a)]`

D

None of these

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The correct Answer is:
a
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