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If z(1+a)=b+ic and a^2+b^2+c^2=1, then [...

If `z(1+a)=b+ic` and `a^2+b^2+c^2=1,` then `[(1+i z)//(1-i z)=` `(a+i b)/(1+c)` b. `(b-i c)/(1+a)` c. `(a+i c)/(1+b)` d. none of these

A

`(a+ib)/(1+c)`

B

`(b-ic)/(1+a)`

C

`(a+ic)/(1+b)`

D

None of these

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