Six points are there on a circle . Two triangles are drawn with no vertex common. What is the probability that none of the sides of the triangles intersect

  • A

    $\frac{2}{5}$

  • B

    $\frac{1}{3}$

  • C

    $\frac{7}{20}$

  • D

    $\frac{3}{10}$

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