If the equation x^(2)+2sqrt(2)xy+2y^(2)+...

If the equation `x^(2)+2sqrt(2)xy+2y^(2)+4x+4sqrt(2)y+1=0` represents tangents to same circle then circumference of circle is

A

`2pi`

B

`3pi`

C

`pi`

D

`4pi`

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The correct Answer is:

A

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