If R be a relation $<$ from $\mathrm{A}=\left\{1, 2, 3, 4\right\}$ to $\mathrm{B}=\left\{1, 3, 5\right\}$ i.e., $\left(\mathrm{a}, \mathrm{b}\right)\in \mathrm{R}\iff \mathrm{a}<\mathrm{b}$, then 

${\mathrm{RoR}}^{-1}$ is

• A

  $\left\{\left(1, 3\right),\left(1, 5\right),\left(2, 3\right),\left(2, 5\right),\left(3, 5\right),\left(4, 5\right)\right\}$

• B

  $\left\{\left(3, 1\right),\left(5, 1\right),\left(3, 2\right),\left(5, 2\right),\left(5, 3\right),\left(5, 4\right)\right\}$

• C

  $\left\{\left(3, 3\right),\left(3, 5\right),\left(5, 3\right),\left(5, 5\right)\right\}$

• D

  $\left\{\left(3, 3\right),\left(3, 4\right),\left(4, 5\right),\right\}$