Consider the following network with node O the origin and node T the destination. The distances between the nodes are in kilometre (km). 7 4 D 5 6 6 B A S 8 12 5 2.1 Use an algorithm to determine the shortest route from node O to node T. Show all your workings on the network diagram. (7) 2.2 What is the shortest route between node O and node T? (1 ) 2.3 What is the minimum distance between node O and node T? (1) Operating System: Microsoft Windows 10 Pro