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A complex number z is said to be unimodu...

A complex number z is said to be unimodular if |z| =1 suppose `z_(1)` and `z_(2)` are complex numebers such that `(z_(1)-2z_(2))/(2-z_(1)z_(2))` is unimodular and `z_(2)` is not unimodular then the point `z_(1)` lies on a

A

straight line parallel to x axis

B

straight line paralle to y axis

C

circle of radius 2

D

circle of radius `sqrt(2)`

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C
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