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Which of the following defined on Z is n...

Which of the following defined on Z is not an equivalence relation ?

A

`(x,y) in S hArr x ge y`

B

`(x,y) in S hArr x = y `

C

`(x,y) inS harr x - y ` is a multiple of 3

D

If `|x-y|` is even `hArr(x,y) inS`

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