For the system of inequalities x+y≤8,x+2y≥6,x≥0,y≥0, the feasible region is a quadrilateral. Which of the following lists gives all its vertices arranged in clockwise order?
a) (0,3),(0,8),(10,0),(6,0)
b) (0,3),(0,8),(8,0),(0,0)
c) (0,8),(0,3),(6,0),(8,0)
d) (0,3),(0,8),(8,0),(6,0)