Which statement correctly describes SCA?

A.
SCA references that are only available to the service component in which the references
are included as stand-alone references.

B.
SCA provides a common invocation model with well-defined interfaces and encapsulation
into modules.

C.
With SCA, service contracts and implementation details are visible to the client.

D.
An SCA service component definition is included in a file called <SERVICE_NAME>.bpel