Use Cramer's Rule to Solve the Linear System $$\left\{ \begin{array} { c } 2 x + 5 y = 21 \\2 x + y = 1\end{array} \right.$$

Multiple Choice

Use Cramer's rule to solve the linear system.
- $$\left\{ \begin{array} { c } 2 x + 5 y = 21 \\2 x + y = 1\end{array} \right.$$

A) x = 5, y = -2
B) x = -5, y = -2
C) x = -2, y = 5
D) x = 2, y = -5