7. (12 pts 6x2) This question relates to Dijkstra's algorithm. In this first row from a table built from Dijkstra's algorithm, for the next row, which router will you add to N' (Nprime) and why? a. Nprime D(u),p(u) D(v).p(v) D(w),p(w) D(x),p(x) D(y).p(y) D(z),p(z) 5,u 6,u o0 Next node: Why?: If the second line of Dijkstra table looks like the one below, what will be the next node added to the Nprime list and why? Be careful, this is a tricky answer. b. NprimeD(u),p(u) D(v),p(v) D(w),p(w)D(x),p(x) D(y),p(y) D(z),p(z) u w 9,u 4,u 4,w Next node: Why