In an ellipse,the distance between its foci is $6$ and the minor axis is $8$. Then its eccentricity is:

  • A
    $\frac{3}{5}$
  • B
    $\frac{1}{2}$
  • C
    $\frac{4}{5}$
  • D
    $\frac{1}{\sqrt{5}}$

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