The set of points where f(x)=x/(1+|x|) i...

The set of points where `f(x)=x/(1+|x|)` is differentiable is

A

`(-oo,-1)uu(-1,oo)`

B

`(-oo,oo)`

C

`(0,oo)`

D

`(-oo,0)uu(0,oo)`

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The correct Answer is:

B

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