If S={(alpha+i)/(alpha-i),alphainR} then...

If `S={(alpha+i)/(alpha-i),alphainR}` then the S lies on

A

a circle with radius`=sqrt2`

B

a straight line with slope=-1

C

a straight line with slope=1

D

a circle with radius=1.

Verified by Experts

The correct Answer is:

D

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