b$.(50$ points$)$ Now assume that there are fixed as well as variable operating costs at each facility. The fixed costs are incurred if any units at all are produced at the facility, but are the same regardless of how.many are produced at the facility. If no units are produced at a facility, the fixed costs are not incurred at that facility. The fixed operating costs vary somewhat across all five facilities, as shown in the table below.

$\backslash$table$[[$Facility$,$Fixed Operating Costs$],[$A$,$$$59,000$