Find the value of f(0) so that f(x) ...

Find the value of f(0) so that
` f(x) = (log (1 + (x)/(a))- log (1 - (x)/(b)))/(x) ` is continuous x = 0

A

`(a+b)/(ab) `

B

`(a-b)/(ab)`

C

`(ab)/(a+b)`

D

`(ab)/(a-b)`

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The correct Answer is:

A

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