Find the Center-Radius Form of the Equation of the Circle $( 1 , - 1 )$

Multiple Choice

Find the center-radius form of the equation of the circle.
-center $( 1 , - 1 )$ , radius 6

A) $( x + 1 ) ^ { 2 } + ( y - 1 ) ^ { 2 } = 36$
B) $( x - 1 ) ^ { 2 } + ( y + 1 ) ^ { 2 } = 6$
C) $( x + 1 ) ^ { 2 } + ( y - 1 ) ^ { 2 } = 6$
D) $( x - 1 ) ^ { 2 } + ( y + 1 ) ^ { 2 } = 36$