What should the Scrum Master do?

Fiv e new Scrum Teams have been created to build one p roduct. A few of the Developers on One of the Scrum Teams ask the Scrum Master How to coordinate their work with the other teams.

What should the Scrum Master do? (Choose the best answer)
A . Teach the Product Owner to work with the lead developers on ordering Product Backlog in a way to avoid too much overlap during a Sprint.
B . Teach them that it is their responsibility to work with the other teams to create an integrated Increment that is inclusive of all five team’s work.
C . Collect the Sprint tasks from the teams at the end of their Sprint Planning and merge that into a consolidated plan for the entire Sprint.
D . Visit the five teams each day to inspect that their Sprint Backlogs are aligned.

Answer: B