HELP ON B AND C please

2. (15) Five workers are available to perform four jobs. The time it takes each worker to perform each job is given in the table below. The objective is to assign workers to jobs so as to minimize the total time required to perform the four jobs. Worker 1 2 3 Job 1 Job 2 10 15 12 8 12 9 6 12 16 12 Job 3 10 20 12 15 8 Job 4 15 16 18 18 12 5 (a) Use the Hungarian method to solve this problem. (b) Find the optimal dual solution. (e) Show that this solution satisfies Strong Duality and Complementary Slackness