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If a, b, c are non-zero real number with...

If a, b, c are non-zero real number with `cne1` such that `a^(2)+b^(2)+c^(2)=c` and if `alpha=(a+ib)/(1-c)`, then `a^(2)+b^(2)` =

A

`|alpha|^(2)/((1+|alpha|^(2))^(2))`

B

`|alpha|^(4)/((1+|alpha|^(2))^(2))`

C

`|alpha|/(1+|alpha|^(2))`

D

`|alpha|/(1+|alpha|)`

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A
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