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On set A=|1,2,3|, relations R and S are ...

On set `A=|1,2,3|`, relations R and S are given by
`R=|(1,1),(2,2),(3,3),(1,2),(2,1)"|`
`S=|(1,1),(2,2),(3,3),(1,3),(3,1)"|` Then

A

`RuuS` is an equivalence relation

B

`RuuS` is reflexive and transitive but not symmetric

C

`RuuS` is reflexive and symmetric but not transitive

D

`RuuS` is symmetric and transitive but not reflexive

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