The city of Beckley, West Virginia, has solicited bids from interested construction firms for five projects it wishes to complete during this fiscal year. Six firms have submitted bids on the projects, as indicated in the table. (An “X” means that the firm did not submit a bid for that project.) Since the projects will be ongoing simultaneously, no firm will be able to complete more than one project. Formulate this assignment problem as a linear program. You don’t need to solve it.