Please answer question B and provide all necessary work.

please use this as necessary to answer question B.

Type your answers in the Excel File Template Submit your finished excel file onto BlackBoard. 1. Napa Air Express decided to offer direct service from Denver to Napa Valley, Management must decide between a full-price service using the company's new fleet of jet aircraft and a discount service using smaller capacity commuter planes. It is clear that the best choice depends on the market reaction to the service Napa Air Express offers. Management developed estimates of the contribution to profit for each type of service based on two possible levels of demand for service to Napa Valley: strong and weak. The following table shows the estimated quarterly profits (In thousands of dollars): Demand for Service Service Strong Weak Full Price $960 -5420 Discount $720 $360 b. Suppose that management of Napa Air Express believes that the probability of strong demand is 0.6 and the probability of weak demand is 0.4. Construct a decision tree and use the expected value approach to determine an optimal decision A B D Service Full Price Discount Probability Demand for Service Strong Weak $260 $720 0.6. -$420 $360 0.4