how to do this question ?

(b) New models of vehicle are introduced as presented in Table Q2(b). Illustrate a decision tree and evaluate the best expected monetary value (EMV) with all the details written. Table Q2(b): New models of vehicle Models Confidence level Expected Annual Profit (%) (RM, millions) 40 9,000 Electric 30 5,000 30 1,000 20 3,000 Electric + 35 -8,000 Hydrogen 45 5,000 Electric + 10 9,000 Nuclear 60 6,000 Fusion 30 -1,000