The real valued function f(x)=(a^x-1)/(x...

The real valued function `f(x)=(a^x-1)/(x^n(a^x+1))` is even, then the value of n can be

A

1) 2

B

2) `(-2)/(3)`

C

3) `1/4`

D

4) `-3`

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The correct Answer is:

B

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