The equation of the circle whose diameter is the common chord of the circle x2 + y2 + 3x + 2y + 1 = 0 and x2 + y2 + 3x + 4y + 2 = 0 is

(1) x2 + y2 + 8x + 10y + 2 = 0 

(2) x2 + y2 + 5x + 4y + 7 = 0

(3) 2x2 + 2y2 + 6x + 2y + 1 = 0 

(4) None of these

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The correct option

(3) 2x2 + 2y2 + 6x + 2y + 1 = 0 

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