help with question 4

4. The plant engineer for the Bitco manufacturing plant is designing an overhead conveyor system that will connect the distribution/inventory center to all areas of the plant. The network of possible conveyor routes through the plant, with the length (in feet) along each branch, follows: 120 160 > 2 > 80 50 210 > 140 4 190 40 130 50 6 Determine the shortest conveyor route from the distribution/inventory center at node 1 to each of the other six