Please answer this question:

Q. Consider circles C1 : x2 + y2 – 4x – 6y – 3 = 0 and C2 : x2 + y2 + 2x + 2y + 1 = 0 . Let L1 = 0 represent the equation of one of the direct common tangent.

   The equation of L1 is

  (A) x + 2 = 0                                          (B) x – 2 = 0
(C) 7x + 24y – 42 = 0                             (D) 7x – 24y + 42 = 0

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