Hudson Corporation is considering three options for its data processing operation: Option $1$ continue with its own staff, Option $2$ hiring an outside vendor, and Option $3$ using a combination of its own staff and outside vendor. The cost of the operation depends on future demand. The annual cost of each option $($in thousands of dollars$)$ is tabulated in the following payoff table

Demand

Staffing options

High

Medium

Low

Own staff

$650$

$650$

$600$

Outside vendor

$900$

$600$

$300$

Combination

$800$

$650$

$500$