Five employees can do four tasks. The cost for each employee to perform each task is in table. You want to assign employees to tasks to minimize the total cost required to perform the four tasks. Each employee can do only one task.

Solve with Branch and Bound Algorithm. Please show me how to do this question so I can learn, thank you!

Employee Task 1 12 B 12 13 D 6 E 17 Task 2 Task 3 17 12 8 20 10 13 12 15 13 9 Task 4 17 16 19 18 13