Ann is invited to help an Agile Release Train (ART) that has struggled through multiple Innovation and Planning (IP) Iterations. They just finished the second Iteration in the Program Increment (PI) and have nothing to demonstrate at the System Demo. Program stakeholders are really concerned.
What should Ann do?

a. Have every team demonstrate their team increment to the stakeholder separately in the team branch
b. Re-architect the system so that there are no dependencies between the teams, and integration is not needed
c. Stop working on any new functionality and fully integrate and trust the system, adjust scope based on learning
d. Re-plan the current PI. De-Scope to leave enough time to integrate what has been built during the IP iteration