\[R({{z}^{2}})=1\]is represented by

1.	\[R({{z}^{2}})=1\]is represented by
A.	The parabola \[{{x}^{2}}+{{y}^{2}}=1\]
B.	The hyperbola \[{{x}^{2}}-{{y}^{2}}=1\]
C.	Parabola or a circle
D.	All the above
Answer» C. Parabola or a circle

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\[R({{z}^{2}})=1\]is represented by

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