11. NPV. A proposed nuclear power plant will cost $2.2 billion to build and then will produce cash flows of $300 million a year for 15 years. After that period (in year 15), it must be decommissioned at a cost of $900 million. ( LO8-I and 1082 ) a. What is project NPV if the discount rate is 5% ? b. What if the discount rate is 18%