[{:(,1,2),(,2,1):}],[{:(,1,2),(,2,1):}]...

`[{:(,1,2),(,2,1):}]`,`[{:(,1,2),(,2,1):}]`

A

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

B

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

C

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

D

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

Verified by Experts

The correct Answer is:

A

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