The enterprise bean with bean-managed transaction demarcation must be a session bean or a message-driven bean.
given answer: false.
Acording to the following article ,
EJB 2.1 entity bean must not be designated with BMT.
Reference:https://docs.oracle.com/cd/E16439_01/doc.1013/e13981/undejdev008.htm
I think this type of question about EJB 2.1 entity bean will not be on the exam.