Let f : R rarr R be a differentiable fun...

Let `f : R rarr R` be a differentiable function at x = 0 satisfying f(0) = 0 and f'(0) = 1, then the value of `lim_(x to 0) (1)/(x) . sum_(n=1)^(oo)(-1)^(n).f((x)/(n))`, is

A

0

B

`-log 2`

C

1

D

e

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The correct Answer is:

B

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