Hudson Corporation is considering three options for managing its data processing operation: continuing with its own staff, hiring an outside vendor to do the managing $($referred to as outsourcing$),$ or using a combination of its own staff and an outside vendor. The cost of the operation depends on economic state of the region. The annual cost of each option $($in thousands of dollars$)$ depends on economic health as follows:

$\backslash$table$[[,$Improving,Stable,Declining$],[$Own staff,$650,650,600],[$Outsourcing$,900,600,300],[$Combination$,800,650,500]]$

$($a$)$ Draw the decision tree for this company.