Equation of a circle passing through (-1, -2) and concentric with the circle x2 + y2 - 3x + 4y - c = 0 is

1
x2 + y2 - 3x + 4y - 1 = 0
2
x2 + y2 - 3x + 4y = 0
3
x2 + y2 - 3x + 4y + 2 = 0
4
None of these

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