For each graph, determine its system of linear inequalities.
1.
A. $\left\{ \begin{array}{rcl} x & \le & y - 1 \cr y & \ge & 1 \end{array}\right.$
B. $\left\{ \begin{array}{rcl} y & \le & - x - 1 \cr y & \le & 1 \end{array}\right.$
C. $\left\{ \begin{array}{rcl} y & \le & x + 1 \cr y & \ge & 1 \end{array}\right.$
D. $\left\{ \begin{array}{rcl} y & \le & x + 1 \cr x & \ge & 1 \end{array}\right.$
E. $\left\{ \begin{array}{rcl} y & \le & x \cr y & \le & 1 \end{array}\right.$
F. None of the above
2.
A. $\left\{ \begin{array}{rcl} y & \le & 4 x \cr x & \ge & 0 \end{array}\right.$
B. $\left\{ \begin{array}{rcl} y & \ge & 4 x \cr x & \le & 2 y \end{array}\right.$
C. $\left\{ \begin{array}{rcl} y & \ge & 4 x \cr x & \ge & 2 y \end{array}\right.$
D. $\left\{ \begin{array}{rcl} y & \le & 4 x \cr x & \le & 2 y \end{array}\right.$
E. $\left\{ \begin{array}{rcl} y & \ge & 2 x \cr x & \ge & 4 y \end{array}\right.$
F. None of the above