Which is true about a service? (Choose two.)

A. Changing the service provider interface always requires recompiling the service provider.

B. Changing the service provider interface sometimes requires recompiling the service provider.

C. Changing the service provider interface never requires recompiling the service provider.

D. If the service provider interface references other classes in the method signatures, they are considered part of the service.

E. If the service provider interface references other classes in the method signatures, they are not considered part of the service.