You need to optimize the team’s performance to minimize the impact of the geographic dispersion

You manage a geographically dispersed development team that uses the Microsoft Visual Studio Scrum 2.0
process template.
Each of the four locations has approximately six team members. You need to optimize the team’s performance
to minimize the impact of the geographic dispersion.
What should you do?

A.
Setup a persistent video conference feed between the locations.

B.
Use a phone conference line for daily standups. Use a paper-based planning board and take snapshots of
the board after daily standups.

C.
Organize the teams into a scrum of scrums, in which each location has a standalone team.
Work off of a single product backlog and meet regularly with the leads of each scrum team.

D.
Use electronic planning and a shared source control repository so that all team members are using a single
set of sources.