An oil company whose field is near Eket plans to construct a network of pipelines that will convey crude from four well heads to a delivery station. If the delivery station is numbered 1 and the well heads 2,3,4,5. if it costs one million naira to construct a kilometre of the pipeline, what network of pipelines results in a minimum cost? Given Distance matrix 1 2 3 4 5 1 11 12 28 40 2 11 20 35 18 3 12 20 14 10 4 28 35 14 25 5 40 18 10 25