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If z=x+iy , absz-2=0 and abs(z-i)-abs(z+...

If `z=x+iy , absz-2=0 and abs(z-i)-abs(z+5i)=0` , then which of the following is TRUE :

A

`x^2+2y+4=0`

B

`x^2-2y+4=0`

C

`x + y=0`

D

`x^2-y+4=0`

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