You are creating and configuring a cluster by using the administration console. Which two statements are true? (Choose two.) 

Answer options:

A. All servers that will be part of the cluster must be created before the cluster is created.
B. You must pick the cluster messaging mode.
C. Even though you create a non-dynamic cluster, you can change it to a dynamic cluster later.
D. Once the cluster is created, you cannot change its messaging mode.
E. The administration console does not provide a way to manually migrate singleton services. It must be set up to be done automatically or by using WLST.

BC