The equations of the tangents to the hyperbola $4x^2 - y^2 = 12$ are $y = 4x + c_1$ and $y = 4x + c_2$. Then $|c_1 - c_2|$ is equal to -

  • A
    $1$
  • B
    $4$
  • C
    $6$
  • D
    $12$

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