If $|\vec A \times \vec B| = \sqrt 3 \vec A \cdot \vec B,$ then the value of $|\vec A + \vec B|$ is

  • A
    $({A^2} + {B^2} + \frac{AB}{\sqrt 3})^{1/2}$
  • B
    $A + B$
  • C
    $({A^2} + {B^2} + \sqrt 3 AB)^{1/2}$
  • D
    $({A^2} + {B^2} + AB)^{1/2}$

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