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Let the relation rho be defined on R as ...

Let the relation `rho` be defined on R as `a rho b` iff `1+a b gt 0`. Then

A

`rho` is reflexive only

B

`rho` is the reflexive relation

C

`rho` is reflexive and transitive but not symmetric

D

`rho` is reflexive and symmetric but not transitive

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