As part of the planned migration from IBM WebSphere MQ V6.0 brokers to IBM WebSphere MQ V7.0, the publishing and subscribing applications have moved to IBM WebSphere MQ V7.0 and all that is left are the brokers.
After IBM WebSphere MQ V7.0 is installed, what actions do the IBM WebSphere MQ administrators need to take to complete the migration?

A.
Activate the PSMODE parameter on the broker

B.
Issue the strmqbrk command

C.
Issue the migratemqbroker command for each broker

D.
Recreate the brokers in the IBM WebSphere MQ V7.0 environment