DM-Groups and Lattice-Q11

Question

Let R be a relation from a set A to a set B. The inverse relation from B to A, denoted by , is the set of ordered pairs  .

S1: R is reflexive relation iff

S2: R is a symmetric relation iff

Which one of the following statements is true?

(A).Only S1

(B).Only S2

(C).Both S1 and S2

(D).None 

Answer 1

B is correct

Comments

can anyone give solution..., i solved it but dont know whether it is correct or not

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1st statement is false , take any reflexive relation with diagonal elements and one element extra , now reverse it.
2nd statement can be proven mathematically using set contain method.