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If A=[(0,2),(3,-4)] and kA =[(0,3 a),(2b...

If `A=[(0,2),(3,-4)] and kA =[(0,3 a),(2b,24)]`, then the values of k, a and b respectively are:

A

`-6,-12,-18`

B

`-6,-4,-9`

C

`-6,4,9`

D

`-6,12,18`

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