Class 12 Relations And Functions · Mcq Single Correct1 Markstypes_of_relations Class 12 Maths · Relations And Functions · Mcq Single Correct #126 On \(A=\{1,2,3\}\), let \(R=\{(1,2)\}\). Then \(R\) is (A) Reflexive(B) Transitive(C) Symmetric(D) None of these