Why should team members continuously and actively engage with other teams during PI Planning?

Why should team members continuously and actively engage with other teams during PI Planning?
A . To manage dependencies and resolve impediments
B. To understand how the other team is working
C. To foster an environment of capacity and velocity
D. To create a backlog of features the team can adopt

Answer: C

Explanation:

https://www.scaledagileframework.com/pi-planning/