Let "R" be a relation on Z times Z defin...

Let "R" be a relation on `Z times Z` defined by `(a,b)R(c,d)` if and only if `ad-bc` is divisible by "5" .Then "R" is

Reflexive,symmetric and transitive

Reflexive and symmetric but not transitive

Reflexive and transitive but not symmetric

Reflexive but neither symmetric nor transitive

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