Three point charges of $+2q, +2q$ and $-4q$ are placed at the corners $A, B$ and $C$ of an equilateral triangle $ABC$ of side '$x$'. The magnitude of the electric dipole moment of this system is

  • A
    $2qx$
  • B
    $2\sqrt{3}qx$
  • C
    $3\sqrt{2}qx$
  • D
    $3qx$

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