The equation of tangent to the circle x^...

The equation of tangent to the circle `x^(2) +y^(2) =a^(2)` which makes with axes a triangle of area `a^(2)` is `:`

A

`x pm y= a sqrt2`

B

`x pm y= pm a sqrt2`

C

`x pm y= 2a`

D

`x+y= pm 2a`

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The correct Answer is:

B

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