You're managing a project to develop a new mobile application for the inventory tracking and-control system of a restaurant franchise organization. Schedule is the highest-priority constraint for the leadership team, but the franchise owners are most concerned about cost and the quality of the application. If there are bugs and errors in the system, they will pay higher costs on waste or lost sales. But investing a lot of effort into delivering great functionality could be expensive. It was decided that an adaptive approach to the project life cycle would likely be the best way to balance the competing priorities and deliver a working, cost-effective application. The franchise decision team has been meeting with the development team. The groups feel good about the project's progress, but they are hearing concerns from other stakeholders about what the impact will be to the bottom line and whether the system will be ready for launch. These concerns were anticipated in planning, and will be managed with cost performance measurement. Cost performance measurement is best done through which of the following? A. Asking for a percent complete from each team member and reporting that in the monthly progress report B. Calculating earned value, and using indexes and other calculations to report past performance and forecast future performance C. Using the 50/50 rule, and making sure the life cycle cost is less than the project cost D. Focusing on the amount expended last month and what will be expended the following month