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If A=1+r^(a)+r^(2 a)+r^(3 a)+.. . to oo ...

If `A=1+r^(a)+r^(2 a)+r^(3 a)+.. .` to `oo` and lebrge `B=1+r^(b)+r^(2 b)+......infty` then `(a)/(b)` is equal to

A

`log _((1-B))(1-A)`

B

`log _(((B-1)/(B).))((A-1)/(A))`

C

`log _(B) A`

D

none of these

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The correct Answer is:
B
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