Use the tableau version of the Transportation Phase 1 algorithm, and if necessary the Phase 2 simplex algorithm, to solve the following problem. A bakery has five trucks servicing the four supermarkets in a town. The trucks contain \(10,8,7,10\), and 6 units of bread, respectively, and the supermarkets are demanding \(12,8,14\), and 7 units, respectively. The delivery costs per unit from each truck to each supermarket are shown in the table below. Devise an optimal delivery plan.

Supermarkets 1 2 3 4 14326 29547 Trucks 35 352 43548 53564