please solve manually and help me understand how to graph two way analysis comparing two options.

Joe is considering the following two lotteries. In lottery he has to pay 10000 w participen and the chances are either he will win or lose. If the wins, he will earn 30,000 so his net outuons will be 20,000 . Whereas, if he loses, he will lose all his money. The same scenarte is repeated for lottery B except that the amount of money involved is a littie bil different. The situation is as shown by the decision tree below. If 1 and y represent the chances of winning lottery A and B respectively, and they are two tndependent events, then: - (5 marke) a. Conduct a two-way sensitivity analysis using the Expected monetary value and determine the regions over which each option is bettet b. If t0.35, and v=0.65, which option should be selected Hint: - Assume t and v as two separate independent probabilities and tw doesn't nesesarily add to one