Find the Center-Radius Form of the Circle Described or Graphed $( 4 , - 6 )$

Multiple Choice

Find the center-radius form of the circle described or graphed.
-a circle having a diameter with endpoints $( 4 , - 6 )$ and $( - 6 , - 5 )$

A) $( x - 5 ) ^ { 2 } + \left( y + \frac { 1 } { 2 } \right) ^ { 2 } = 101$
B) $( x - 1 ) ^ { 2 } + \left( y - \frac { 11 } { 2 } \right) ^ { 2 } = 125$
C) $( x + 1 ) ^ { 2 } + \left( y + \frac { 11 } { 2 } \right) ^ { 2 } = \frac { 101 } { 4 }$
D) $( x - 1 ) ^ { 2 } + \left( y + \frac { 11 } { 2 } \right) ^ { 2 } = 5$