What are characteristics of database services and WebSphere MQ services?

A solution developer is considering creating a WebSphere MQ service and a DB2 database service to be consumed by a message flow.
What are characteristics of database services and WebSphere MQ services? (Select three.)
A. A database service can only be called from a database node.
B. A database service can be stored in the IBM Integration Bus Integration Registry.
C. A MQ Service can be stored in the IBM Integration Bus Integration Registry.
D. Database services and WebSphere MQ services are defined with WSDL.
E. Service Discovery can be used to create database and WebSphere MQ services.
F. In a database services, only Insert, Update, and Delete database operations are supported.

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