The equation \[z\,\overline{z}+a\,\bar{z}+\bar{a}z+b=0,b\in R\] represents a circle if

The equation \[z\,\overline{z}+a\,\bar{z}+\bar{a}z+b=0,b\in R\] repres

1.	The equation \[z\,\overline{z}+a\,\bar{z}+\bar{a}z+b=0,b\in R\] represents a circle if
A.	\[\|a{{\|}^{2}}=b\]
B.	\[\|a{{\|}^{2}}>b\]
C.	\[\|a{{\|}^{2}}<b\]
D.	None of these
Answer» C. \[\|a{{\|}^{2}}<b\]

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The equation \[z\,\overline{z}+a\,\bar{z}+\bar{a}z+b=0,b\in R\] represents a circle if

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