John is a project coordinator working on a software development project. He needs to track the project's progress regularly to ensure that the team is on track to complete the project within the given timeframe. He decides to use a Burn Down Chart to track progress. How is progress tracked in a Burn Down Chart? Question 3 options: By plotting the total amount of work completed each day By plotting the cumulative sum of the estimated work remaining each day By plotting the number of user stories completed each day By plotting the estimated work completed each day