Find the Center and Radius of the Circle with the Given

Multiple Choice

Find the center and radius of the circle with the given equation.
- $( x - 1.7 ) ^ { 2 } + ( y + 4.7 ) ^ { 2 } = 7$

A) $( 4.7 , - 1.7 ) ; r = \sqrt { 7 }$
B) $( 4.7 , - 1.7 ) ; \mathrm { r } = 7$
C) $( 1.7 , - 4.7 ) ; r = 7$
D) $( 1.7 , - 4.7 ) ; r = \sqrt { 7 }$