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The equation of circle touching the |y| ...

The equation of circle touching the |y| = x at a distance `sqrt2` units from the origin is :

A

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

B

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

C

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

D

None of these

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The correct Answer is:
a
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