In distance-vector routing, good news (decrease in a link metric) will propagate fast. In other words, if a link distance decreases, all nodes quickly learn about it and update their vectors. In Figure, we assume that a four-node internet is stable, but suddenly the distance between nodes A and D, which is currently 6, is decreased to 1 (probably due to some improvement in the link quality). Show how this good news is propagated and find the new distance vector for each node after stabilization. D B C A0A A 3 B A5B A6D B3A BOB B2C B5D C5B C2B COC C4D D6A D5 B D4C DOD 5 Cost B 3 Next hop 6