The project manager should address the issue between the two team members by scheduling a meeting with them and using conflict resolution techniques to find a mutually acceptable solution. This way, the project manager can prevent the issue from escalating and affecting the project performance and team morale. This approach is consistent with the agile principle of fostering collaboration and trust among the team members12. References: 1: PMBOK Guide, 6th Edition, Chapter 9: Project Resource Management 2: Agile Practice Guide, Chapter 2: An Agile Mindset

The project manager is in the middle of the project, which is divided into five iterations. Each user story is worth $50, so the total budget for the project is $50 * 100 = $5000. The actual expenditure so far is $200, and
50 user stories have been delivered. This means that the project has spent less than the budgeted amount for the 50 user stories ($50 * 50 = $2500), so it is under budget. Since the project is in the middle and has delivered half of the user stories, it is on schedule.
References: The Project Management Professional (PMP)Certification from PMI1, PMP Examination Content Outline - June 2019 - Project Management Institute2, Professional in Business Analysis Reference Materials3.