Let $\mathrm{A}=\left\{1, 2, 3, 4\right\}$ and R be a relation in A given by $\mathrm{R}=\left\{\left(1, 1\right), \left(2, 2\right), \left(3, 3\right), \left(4, 4\right), \left(1, 2\right), \left(2, 1\right), \left(3, 1\right), \left(1, 3\right)\right\}$.

Then R is

• A

  Reflexive

• B

  Symmetric

• C

  Transitive

• D

  An equivalence