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If the angle of intersection of the circle `x^2+y^2+x+y=0` and `x^2+y^2+x-y=0` is `theta` , then the equation of the line passing through (1, 2) and making an angle `theta` with the y-axis is (A) `x=1` (B) `y=2` (C) `x+y=3` (D) `x-y=3`

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