Vectors u and v are shown on the graph. vectors u and v share an initial point and vector u points up 8 units and vector v points to the right 6 units Which of the following vectors represents u + v? a-vector points to the left 6 units and up 8 units b-vector points to the right 6 units and down 8 units c-vector points to the right 6 units and up 8 units d-vector points to the left 6 units and down 8 units