The equation of the circle whose centre is C(-2, 3) and which touches the line x - y + 7 = 0 

1
x2 + y2 + 4x - 6y + 11 = 0 
2
x2 + y2 + 4x + 6y + 11 = 0
3
2x2 + 2y2 + 4x - 6y + 11 = 0
4
x2 + y2 - 4x - 6y - 11 = 0

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