Based on the Answer and Sensitivity reports, what is the objective function?

Objective Cell $($Min$)$

$\backslash$table$[[$Cell$,$Name,Original Value,Final Value$],[$SB$$18$ Cost $=,2693333\mathrm{.}33,2693333\mathrm{.}33,]]$

Variable Cells

$\backslash$table$[[$Cell$,$Name,Original Value,Final Value,Integer$],[$SBS$15,,70\mathrm{.}00,70\mathrm{.}00$ Contin$],[$SBS$16,,120\mathrm{.}00,120\mathrm{.}00$ Contin$],[$$B$$17,,53\mathrm{.}33,53\mathrm{.}33,$Contin$]]$

Constraints

$\backslash$table$[[$Cell$,$Name,Cell Value,Formula,Status,Slack$],[$SHS$10,$ Usage,$70,$$$H$$$10$$$G$$$10,$Not Binding,$50],[$SHS$11,$ Usage,$120,$$HS$G$$11,$Binding,$0],[$SHS$12,$ Usage,$53\mathrm{.}33,$SHS$GS$12,$Not Binding,$66\mathrm{.}6666667],[$$GS$6,"$ #NAME?,$2,500,000,$$$G$$$6=$$$H$$$6,$Binding,$0],[$SHS$7,$ Usage,,SH$$7>=$$G$ $7,$Binding,$0],[$SHS$8,$ Usage,$120,$SHS$8>=$$G$$8,$Not Binding,$70],[$$HS$9,$ Usage,$53\mathrm{.}33,$SH$$9>=$$G$$9,$Not Binding,$3\mathrm{.}33]]$

Variable Cells

$\backslash$table$[[$Cell$,$Name,$\backslash$table$[[$Final$],[$Value$]],\backslash$table$[[$Reduced$],[$Cost$]],\backslash$table$[[$Objective$],[$Coefficient$]],\backslash$table$[[$Allowable$],[$Increase$]],\backslash$table$[[$Allowable$],[$Decrease$]]],[$$BS$151,70,,0,12000,1E+30,1259\mathrm{.}259259],[$$B$$162,120,,0,9000,666\mathrm{.}6666667,1E+30$