If z, and z, are fixed and z satisfies 'y = 'z- z|+ l'z- z| what are the possible values of k so that this equation represents a circle? (A) k > - |1z,* – |z,"| (B) k > 늑||° -1z2l| (C) k > 늑저-217 (D) k >lz, – z, (E) None of these

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