A proposed nuclear power plant will cost $4.5 billion to build and then will produce cash flows of $500 million a year for 5 years. 600 million for 5 years and 700 million for another 5 years. After that period (in Year 15), it must be decommissioned at a cost of $1.5 billion. What is project NPV if the discount rate is 6%? What if it is 12%? If the federal government is ready to subsidize the project, how much subsidy should they offer under each scenario? If scenario 1 is 75% likely and scenario 2 is only 25% likely, what is that amount?