Find the Center-Radius Form of the Circle Described or Graphed $( x , y )$

Multiple Choice

Find the center-radius form of the circle described or graphed.
-Find all points $( x , y )$ with $x = y$ that are 5 units from $( 9,2 )$ .

A) $( 5,5 )$ and $( - 6 , - 6 )$
B) $( 5,5 )$ and $( 6,6 )$
C) $( - 5 , - 5 )$ and $( - 6 , - 6 )$
D) $( - 5 , - 5 )$ and $( 6,6 )$