Project managers should turn customer needs into requirements. The sum of these requirements is? Functional Technical Organizational Scope Commercial Functional requirements: Indicates the associated costs Tell what the service will do Are technology driven Should be simple Tell how a service is performed Technical requirements: Tell what the service will do Are technology driven Tell how a service is performed Should be simple Indicates the associated costs The project selection tool that converts future costs into today's costs using the time value of money is? Simple conversion method Payback method Internal rate of return Net Present Value Benefit-to-cost ratio comparison