When using the Scaled Agile Framework, what is one benefit of adding synchronization to the cadence of multiple teams?

When using the Scaled Agile Framework, what is one benefit of adding synchronization to the cadence of multiple teams?
A . System-wide development variability is reduced to zero
B . System-wide demos are possible since all the team demos happen at the same time
C . Each team will work faster since they all start at the same time
D . Overall work-in-progress is reduced

Answer: B