Solve the Nonlinear System of Equations $$\left\{ \begin{array} { l } x ^ { 2 } + y ^ { 2 } = 85 \\x - y = 1\end{array} \right.$$

Multiple Choice

Solve the nonlinear system of equations.
- $$\left\{ \begin{array} { l } x ^ { 2 } + y ^ { 2 } = 85 \\x - y = 1\end{array} \right.$$

A) $( - 6 , - 7 ) , ( 7,6 )$
B) $( 6,7 ) , ( 7,6 )$
C) $( 6 , - 7 ) , ( 7 , - 6 )$
D) $( - 6,7 ) , ( - 7,6 )$