Give All Solutions of the Nonlinear System of Equations, Including $$\begin{array} { r } x y = 30 \\x + y = - 11\end{array}$$

Multiple Choice

Give all solutions of the nonlinear system of equations, including those with nonreal complex components.
- $$\begin{array} { r } x y = 30 \\x + y = - 11\end{array}$$

A) $\{ ( 5 , - 6 ) , ( 6 , - 5 ) \}$
B) $\{ ( - 5 , - 6 ) , ( - 6 , - 5 ) \}$
C) $\{ ( - 5,6 ) , ( - 6,5 ) \}$
D) $\{ ( 5,6 ) , ( 6,5 ) \}$