If f(x) = 1/(1-x), then f(f(f(x))) is eq...

If `f(x) = 1/(1-x)`, then `f(f(f(x)))` is equal to

A

1) `(x-1)/(x)`

B

2) `f (x)`

C

3) `x`

D

4) `-x`

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The correct Answer is:

C

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