The required region is

A. $x\le -1,\text{ }x\ge 4$ B. $x\le 4$ C.$-1\le x\le 4$

D. $x\le -1,0\le x\le 4$ 

Which of the following represent the graph above?

If $\alpha \text{ and }\beta $are roots of the equation $3{{x}^{2}}+5x-2=0$. Find the value of $\tfrac{1}{\alpha }+\tfrac{1}{\beta }$.(A)  $-\tfrac{5}{2}$  (B)  $-\tfrac{3}{2}$  (C)  $\tfrac{1}{2}$  (D)$\tfrac{5}{2}$