Solve it the tree USING QM please

Construct a decision tree for the decision situation described in Problem and indicate the best decision. Problem Fenton and Farrah Friendly, husband-and-wife car dealers, are soon going to open a new dealership. They have three offers: from a foreign compact car company, from a U.S. producer of fullsized cars, and from a truck company. The success of each type of dealership will depend on how much gasoline is going to be available during the next few years. The profit from each type of dealership, given the availability of gas, is shown in the following payoff table: Gasoline Availability Dealership Shortage .6 Surplus.4 Compact cars $ 300,000 $150,000 Full-sized cars -100,000 600,000 Trucks 120,000 170,000 Determine which type of dealership the couple should purchase