Router R has the table shown below listing five destinations A-E, and three neighbor routers S, T, U. It updates its table using the usual distance-vector algorithm, where dist is the distance in hops. Original table: net dist nexthop A 5 S B 4 U C 6 T D 7 T E 8 S Suppose R receives the table below as its next distance-vector report from neighbor S. net dist A 8 B 4 C 4 D 6 E 6 F 4 Give Rs updated table and a brief explanation of each change.