Which TransactSQL statement should you use?

You use the same Service Broker configuration to support a Web site and an internal application.
The
Web site generates a greater workload than the internal application.
You need to configure Service Broker to ensure that messages sent by the internal application are
processed before those sent by the Web site.
Which TransactSQL
statement should you use?

A.
ALTER SERVICE

B.
CREATE CONTRACT

C.
CREATE BROKER PRIORITY

D.
ALTER QUEUE WITH ACTIVATION