The function f(x) = (1-sinx +cosx)/(1+si...

The function `f(x) = (1-sinx +cosx)/(1+sinx +cosx)` is not defined at `x=pi`. The value of `f(pi)`, so that f(x) is continous at `x=pi` is

A

`-1/2`

B

`1/2`

C

`-1`

D

1

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The correct Answer is:

C

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