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If A=((6,2),(7,-5)) and A-B=((-2,1),(4,-...

If `A=((6,2),(7,-5))` and `A-B=((-2,1),(4,-9))`, then B=

A

`((-8,-1),(3,4))`

B

`((8,1),(-3,-4))`

C

`((4,3),(11,-14))`

D

`((8,1),(3,4))`

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