5) Which one of the following points is in the feasible set of the system of inequalities? \left\{\begin{array}{l} x \geq 0, y \geq 0 \\ x+y \leq 12 \\ 2

x+5 y \leq 50 \end{array}\right. A) (-2, 0) B) (1, 10) C) (1, -2) D) (3, 2) E) none of these