Let R and S be two relations on a set A. Then which is not correct?

A) R and S are transitive, then R u S is also transitive.

  B) R and S are transitive, then R n S is also transitive.

C) R and S are reflexive, then R n S is also reflexive.

  D) R and S are symmetric, then R U S is also symmetric

Correct answer:
A) R and S are transitive, then R u S is also transitive.

Description for Correct answer:
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