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Let the tangent to the circle x^(2) + y^...

Let the tangent to the circle `x^(2) + y^(2) = 25` at the point R(3, 4) meet x-axis and y-axis at points P and Q, respectively. If r is the radius of the circle passing through the origin O and having centre at the incentre of the triangle OPQ, then `r^(2)` is equal to :

A

`(625)/(72)`

B

`(125)/(72)`

C

`(585)/(66)`

D

`(529)/(64)`

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