Problem: Flesh Options wants to have at least one outlet within 2 kilometers from all 7 barangays in northern Angeles City. The company is evaluating 5 possible outlet sites to serve the 7 barangays. Presented below are indications of barangays that will be within 2 km of each proposed site as well as the costs for the respective monthly maintenance costs of all sites. Formulate an LP model (i.e. objective function and constraints) that can be used to solve for the optimal site mix for Flesh Options (minimal cost).