You are setting up EX4200 switches in a Virtual Chassis configuration to deliver high availability.

Which two actions would improve availability? (Choose two.)

A.
Enable graceful Routing Engine switchover.

B.
Set the mastership priority value of all switches to 255.

C.
Distribute all uplink ports across the REs.

D.
Distribute uplink ports across the various line cards in the VC.

Explanation: