If R={(x,y):x,y in I, x^2+y^2 le 4} is a...

If `R={(x,y):x,y in I, x^2+y^2 le 4}` is a relation in I, then domain of R is:

A

{0,1,2}

B

`{0, -1, -2}`

C

`{-2, -1, 0, 1,2}`

D

None of these

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The correct Answer is:

C

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