If |z-1|lt=2a n d|omegaz-1-omega^2|=a w...

If `|z-1|lt=2a n d|omegaz-1-omega^2|=a` where `omega` is cube root of unity , then complete set of values of `a` is `0lt=alt=2` b. `1/2lt=alt=(sqrt(3))/2` c. `(sqrt(3))/2-1/2lt=alt=1/2+(sqrt(3))/2` d. `0lt=alt=4`

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