Let R be a relation over the set N × N and it is defined by \[(a,\,b)R(c,\,d)\Rightarrow a+d=b+c.\] Then R is

Let R be a relation over the set N × N and it is defined by \[(a,\,b)

1.	Let R be a relation over the set N × N and it is defined by \[(a,\,b)R(c,\,d)\Rightarrow a+d=b+c.\] Then R is
A.	Reflexive only
B.	Symmetric only
C.	Transitive only
D.	An equivalence relation
Answer» E.

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Let R be a relation over the set N × N and it is defined by \[(a,\,b)R(c,\,d)\Rightarrow a+d=b+c.\] Then R is

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