If 2A=[(2,1),(3,2)], then what is A^(-1)...

If 2A=`[(2,1),(3,2)]`, then what is `A^(-1)` equal to ?

A

`[(2,-1),(-3,2)]`

B

`1/2[(2,-1),(-3,2)]`

C

`1/4[(2,-1),(-3,2)]`

D

None of these

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The correct Answer is:

D

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