Question 2:
When a stateful session bean is about to be passivated, which of the following can remain assigned to non-transient fields of the session bean class?
A. null B. A reference to the javax.transaction.Transaction interface. C. A reference to the javax.ejb.SessionContext object (even if it is not serializable). D. A JDBC connection. E. A serializable object whose declared type does not implement the Serializable interface.