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P(a, b) is a point in the first quadrant...

`P(a, b)` is a point in the first quadrant Circles are drawn through P touching the coordinate axes such that the length of common chord of these circles is maximum, if possible values of `a/b` is `k_1 and k_2`, then `k_1 +k_2` is equal to

A

`3+-3sqrt2`

B

`3+2sqrt3`

C

`3-2sqrt3`

D

`3+-2sqrt2`

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