Decide Whether or Not the Equation Has a Circle as Its

Multiple Choice

Decide whether or not the equation has a circle as its graph. If it does not, describe the graph.
- $$x ^ { 2 } + y ^ { 2 } + 6 x - 18 y + 90 = 0$$

A) no; the graph is the point $( 3 , - 9 )$
B) no; the graph is the point $( - 3,9 )$
C) no; the graph is nonexistent
D) yes