The equation of the circle passing thro...

The equation of the circle passing through the point of intersection of the circle `x^2+y^2=4` and the line `2x+y=1` and having minimum possible radius is (a)`5x^2+5y^2+18 x+6y-5=0` (b) `5x^2+5y^2+9x+8y-15=0` (c) `5x^2+5y^2+4x+9y-5=0` (c)`5x^2+5y^2-4x-2y-18=0`

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