Give All Solutions of the Nonlinear System of Equations, Including $\begin{array} { l } x y = 1 \\28 x - y = 3\end{array}$

Multiple Choice

Give all solutions of the nonlinear system of equations, including those with nonreal complex components.
$\begin{array} { l } x y = 1 \\28 x - y = 3\end{array}$

A) $\left\{ \left( - \frac { 1 } { 7 } , - 7 \right) , \left( \frac { 1 } { 4 } , 4 \right) \right\}$
B) $\left\{ \left( \frac { 1 } { 4 } , 4 \right) \right\}$
C) $\{ ( 7 , - 7 ) , ( - 4,4 ) \}$
D) $\left\{ \left( - 7 , - \frac { 1 } { 7 } \right) , \left( 4 , \frac { 1 } { 4 } \right) \right\}$