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Let A={x in R : x ne 0, -4le xle4} and f...

Let `A={x in R : x ne 0, -4le xle4} and f:A rarrR` is defined by `f(x)=(|x|)/(x)` for `x in A.` Then the range of f is

A

`{1, -1}`

B

`{x:0lexle4}`

C

`{1}`

D

`{x:-4, lexle0}`

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