Kindly provide and explanation and solution as well. Salamat!

Note: This problem requires the use of a linear programming application such as Solver or Analytic Solver. The university is scheduling cleaning crews for its ten buildings. Each crew has a different cost and is qualified to clean only certain buildings. There are eight possible crews to choose from in this case. The goal is to minimize costs while making sure that each building is cleaned. The management science department formulated the following linear programming model to help with the selection process. Min 200x1 + 250x2 + 225x3 + 190x4 +215x5 + 245x6 + 235x7 + 220x8 s.t. x1 + x2 + x5 + x7 2 1 {Building A constraint} X1 + x2 + x3 1 (Building B constraint} X6 + X8 2 1 {Building C constraint} x1 + x4 + x2 > 1 {Building D constraint} x2 + x7 2 1 {Building E constraint} X3 + X8 2 1 {Building F constraint} x2 + x5 + x7 ? 1 {Building G constraint} x1 + x4 + x6 2 1 {Building H constraint} X1 + X6 + X8 1{Building I constraint} X1 + x2 + xy ? 1 (Building J constraint} 1, if crew j is selected 10, otherwise Set up the problem in Excel and find the optimal solution. What is the cost of the optimal set of locations? Multiple Choice 555 655 o 255 455 O O 355