I'm having trouble with this problem, can someone me?

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Will give a: 122 b: 90 c: 48 d: 180

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points