Let L denote the set of all straight lines in a plane. Let a relation R be defined by lRm if and only
Let L denote the set of all straight lines in a plane. Let a relation R be defined by lRm if and only if l is perpendicular to m ∀ l, m ∈ L. Then R is
(A) reflexive
(B) symmetric
(C) transitive
(D) none of these
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