Identify the Center and Radius of the Circle $x ^ { 2 } + 18 x + y ^ { 2 } + 16 y + 45 = 0$

Multiple Choice

Identify the center and radius of the circle $x ^ { 2 } + 18 x + y ^ { 2 } + 16 y + 45 = 0$ .

A) center: $( 18,16 )$ radius: 535
B) center: $( - 9 , - 8 )$ radius: 45
C) center: $( 9,8 )$ radius: 10
D) center: $( - 18 , - 16 )$ radius: 45
E) center: $( - 9 , - 8 )$ radius: 10