Coast to Coast Construction Company has plants in three locations and is currently working on three major construction projects, each located at a different site. The shipping cost per truckload of concrete, daily plant capacities, and daily project requirements are provided in the accompanying table. P Q R S A 19 30 50 10 7 B 70 30 40 60 6 C 40 40 70 20 18 5 8 14 a. Is this a balanced or unbalanced transportation problem? Explain. (2 marks) b. When is a dummy source added to a transportation problem? (2 marks) C. State three assumptions of the transportation technique. (6 marks) d. Formulate an initial feasible solution to Coast to Coast Construction Company transportation problem using Vogel Approximation Model. (9 marks) P Briefly explain three market and three product related factors that drive transport costs (6 marks)