Which of the following statements make a message-driven bean different from a session bean?

Multiple clients can be processed by a single message-driven bean.

A message-driven bean has only one bean class.

Clients do not access message-driven beans through interfaces.

The EJB container can assign a message to any message-driven bean instance because all instances of a message-driven bean are equivalent.

Data or conversational state for a specific client cannot be retained by message-driven bean instances.