3. Due to uncertainty of the economy, the cost parameter in above question may change next year's. They predicted that the labor cost(pay rate of the workers for the in-house option) can either go up by 20% or go down by 10% with equal chance next year in addition, the cost for subcontracting can go up by 20% with 80% of chance or go down by 10% with 20% of chance next year. Therefore, the company, decided to apply the decision tree technique, together with the linear programming model, to help them get an estimate of the total cost. Explain briefly. A. how would the uncertainty change the coefficient of the objective function and the total cost(use brief c