Let $L$ be the set of all straight lines in the Euclidean plane. Two lines $l_1$ and $l_2$ are related by the relation $R$ if and only if $l_1$ is parallel to $l_2$. Then the relation $R$ is:

  • A
    Reflexive
  • B
    Symmetric
  • C
    Transitive
  • D
    All of the above $(a), (b),$ and $(c)$

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