[" 15.The length of the common chord of ...

[" 15.The length of the common chord of the circle "x^(2)+y^(2)+4x+6y+4=0" and "x^(2)+y^(2)+6x+4y+4=0],[" is - "],[[" (A) "sqrt(10)," (B) "sqrt(22)," (C) "sqrt(34)," (D) "sqrt(38)]]

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