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 asoutsourcing), or using a combination of its own staff and an outside vendor. The cost of the operation depends on future demand. The annual cost of each option (in thousands of dollars) depends on demand as follows:

Staffing Options	Demand
High	Medium	Low
Own staff	650	650	600
Outside vendor	900	600	300
Combination	800	650	500

If the demand probabilities for high, medium and low are 0.2, 0.5, and 0.3, respectively.

Construct a decision tree for this problem.