The equation \[{{x}^{2}}+{{y}^{2}}+{{z}^{2}}=0\]represents

1.	The equation \[{{x}^{2}}+{{y}^{2}}+{{z}^{2}}=0\]represents
A.	(0, 0, 0)
B.	A circle
C.	A plane
D.	None of these
Answer» B. A circle

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The equation \[{{x}^{2}}+{{y}^{2}}+{{z}^{2}}=0\]represents

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