Which two statements describe the contact between an Enterprise JavaBeans (EJB) container and the EJBs that it hosts?

Which two statements describe the contact between an Enterprise JavaBeans (EJB)
container and the EJBs that it hosts?

A.
The container provides automatic logging of all exceptions and errors generated by EJB
code.

B.
The container provides a transparent scaling mechanism to handle spikes in demand.

C.
An EJB can extend its services, such as security, to improve performance.

D.
The container has a well defined lifecycle model for each EJB type.